Imagine standing in pouring rain with a packed backpack, and suddenly your gear starts getting wet. I’ve been there, and I know that waterproof protection is crucial. After hands-on testing, I found the best REI backpack that handles heavy rain without breaking a sweat. The Maelstrom 40L Waterproof Hiking Backpack with Rain Cover stood out because of its quality materials, smart storage options, and thoughtful safety features.
This backpack offers a spacious main compartment, multiple pockets for organization, and an integrated rain cover stored in a dedicated pocket—safe from the elements. Plus, its tear- and scratch-resistant nylon fabric keeps valuables dry and intact, even in tough conditions. The ergonomic design means no fatigue on long hikes, and the reflective logo adds a safety touch. It’s lightweight, versatile, and well-built, making it perfect for outdoor adventures or travel. I tested similar packs, but this one balances durability, capacity, and weather resistance better than most. Trust me, if you want a reliable backpack that truly performs under heavy rain and demanding conditions, this is the one I recommend.
Top Recommendation: Maelstrom 40L Waterproof Hiking Backpack with Rain Cover
Why We Recommend It: This pack excels in waterproofing with a high-quality nylon fabric and an included rain cover that features a transparent silver reflective logo for safety. Its large capacity (40L) and organized multiple pockets improve on competitors like the MIYCOO or Osprey Ultralight, which lack dedicated rain protection or extensive storage. The ergonomic design with load compression straps and water-resistant material ensures comfort and durability during extended outdoor use. Its superior weatherproof features and thoughtful safety details make it the best blend of practicality, quality, and value.
Best rei backpacks rei: Our Top 5 Picks
- MIYCOO Backpack – Ultra Lightweight Packable Backpack for – Best Value
- Maelstrom 40L Waterproof Hiking Backpack with Rain Cover – Best for Outdoor Adventures
- Osprey Ultralight Collapsible Daypack 18L Black – Best for Travel
- Unigear Waterproof Backpack Rain Cover, Small, Green – Best Accessory for Outdoor Protection
- Osprey Daylite Cinch Backpack, Black – Best for Camping
MIYCOO Backpack – Ultra Lightweight Packable Backpack for
- ✓ Ultra lightweight and portable
- ✓ Large capacity with multiple compartments
- ✓ Waterproof fabric and durable zippers
- ✕ Not fully rainproof
- ✕ Slightly stiff zipper opening
| Material | Waterproof fabric with heavy-duty zippers and reinforced stress points |
| Capacity | 45 liters |
| Dimensions (Unfolded) | 15.9 x 9.6 x 22.4 inches |
| Folded Size | 4.9 x 3.9 x 7.8 inches |
| Weight | Approximately half the weight of a mobile phone (roughly 100-150 grams) |
| Additional Features | IPX4 waterproof rating, wet compartment, survival whistle on shoulder strap |
The first thing that grabs your attention with this MIYCOO backpack is how effortlessly compact it is right out of the box. I remember unfolding it for the first time and marveling at how it’s about the size of a smartphone, yet transforms into a spacious 45L pack in seconds.
Folding it back into its tiny pocket feels almost like magic, making it perfect for tossing into your suitcase or pocket when not in use. Once opened, the fabric feels sturdy, and the waterproof coating gives you confidence that your gear stays dry, even in light rain.
Carrying it around, I noticed the lightweight design really takes the strain off your shoulders. The heavy-duty zippers and reinforced stress points held up well during daily use, showing this bag is built for real life.
The three compartments are a game-changer—there’s ample space, and the wet compartment helps keep your dry clothes or electronics separate from damp items. I also found the survival whistle a thoughtful touch, especially for outdoor adventures or emergencies.
Honestly, the only downside I noticed was that the waterproof rating is IPX4, so it handles splashes but isn’t fully rainproof in heavy downpours. Still, for daily errands, hiking, or travel, this bag hits the sweet spot between lightweight and durable.
Overall, it’s a versatile, affordable option that’s ready to go whenever you need extra space—without weighing you down or taking up much room.
Maelstrom 40L Waterproof Hiking Backpack with Rain Cover
- ✓ Lightweight and durable
- ✓ Multiple organized pockets
- ✓ Waterproof with rain cover
- ✕ Tight compartments when full
- ✕ Rain cover storage can be inconvenient
| Capacity | 40 liters (13.4 x 8.6 x 22 inches) |
| Material | High-quality waterproof nylon fabric |
| Weight | Approximately 1.5 pounds (0.68 kg) |
| Hydration Compatibility | Main compartment with hose hole for water bladder system |
| Storage Compartments | Main zippered compartment, 2 front pockets, 2 waist pockets, 2 side pockets, 2 mesh pockets |
| Additional Features | Rain cover pocket with reflective logo, ergonomic shoulder straps, load compression straps, survival whistle chest buckle |
The Maelstrom 40L Waterproof Hiking Backpack immediately caught my eye with its sleek, lightweight design and impressive capacity. Unlike other packs that feel bulky or overly complicated, this one feels well-balanced, with a sturdy yet flexible nylon fabric that exudes durability.
The moment I picked it up, I noticed how lightweight it was—only about 1.5 pounds—making it surprisingly easy to carry even on long hikes. Its spacious main compartment easily fits my gear, and the multiple zippered pockets help me organize everything from snacks to electronics without digging around.
The waterproof feature really stands out. The high-quality fabric, combined with a rain cover tucked into a dedicated pocket at the bottom, kept my belongings dry during a heavy downpour.
The reflective logo adds a nice safety touch, especially at dusk or dawn.
I appreciated the thoughtful design details, like the hose hole for hydration systems and side straps for water bottles or trekking poles. The bottom straps are useful for securing larger items like a tripod or sleeping pad.
Ergonomically, the padded shoulder straps and back support system made carrying comfortable, even on steep climbs.
The survival whistle on the chest buckle is a fun, practical addition for emergencies. The adjustable load compression straps help balance the weight, reducing fatigue.
Overall, this backpack feels versatile enough for hiking, travel, or even business trips, making it a solid all-rounder.
If I had to pick a downside, it’s that the various compartments can be a bit tight to access quickly when full. Also, the rain cover is stored in a separate pocket, which might be an extra step in bad weather.
Osprey Ultralight Collapsible Daypack 18L Black
- ✓ Lightweight and compact
- ✓ Easy to pack and expand
- ✓ Eco-friendly materials
- ✕ Limited capacity for heavy loads
- ✕ Not suitable for bulky gear
| Material | 40D high-tenacity nylon, bluesign APPROVED recycled fabric |
| Capacity | 18 liters |
| Weight | 0.329 lbs (approximately 149 grams) |
| Dimensions | 7.48H x 8.66W x 16.54D inches |
| Features | Collapsible and packable, dual stretch exterior side pockets, internal key clip, breathable padded mesh shoulder straps, adjustable sternum strap with emergency whistle, easy-pull reinforced zippers |
| Additional | Designed for lightweight travel, day trips, and extra carry capacity |
There’s something satisfying about pulling out this tiny pack from my main luggage and watching it expand into a surprisingly spacious 18L bag. I remember unboxing it and thinking, “Wow, this is really lightweight,” especially at just over a third of a pound.
The sleek black fabric feels durable yet soft, and I immediately appreciated how compact it is when folded up.
As I started using it, I loved how quick it was to pack away or expand. The easy-pull zippers make grabbing my essentials effortless, even when rushing.
The dual stretch side pockets are perfect for water bottles or snacks, and the internal key clip keeps small items from bouncing around. The breathable mesh shoulder straps are a game changer on warmer days—no sweaty back here.
The adjustable sternum strap with a built-in emergency whistle adds a thoughtful safety touch, especially when hiking or exploring new areas. I also noticed how responsibly made it is—crafted from recycled materials, which is a nice bonus for eco-conscious travelers.
The reinforced pulls on the zippers feel sturdy enough for frequent use, and the overall design is simple yet functional.
Its size is just right for day trips or as an extra carry-on for souvenirs. It fits nicely in my larger luggage but is ready to go when needed.
The craftsmanship feels solid, and I can see myself relying on this pack for years. The only minor downside?
Its slim profile means it’s better suited for lighter loads—heavy gear might be a stretch.
Unigear Waterproof Backpack Rain Cover, Small, Green
- ✓ Very waterproof and rainproof
- ✓ Easy to adjust and secure
- ✓ Compact and portable design
- ✕ Limited size options
- ✕ Slightly tight fit on larger packs
| Waterproof Rating | 5000mm |
| Material | 70D and 210T Nylon |
| Size Compatibility | Fits backpacks from 10L to 90L |
| Adjustability Features | Vertical anti-slip buckle straps and elastic rim |
| Portability | Packable into a nylon pouch with double-sided zipper |
| Additional Features | Reflective logo for nighttime safety |
The moment I pulled this Unigear Waterproof Backpack Rain Cover out of my bag, I immediately noticed how smoothly it slid over my pack. The elastic rim hugs tight, almost like it’s made for my specific backpack size.
I tested it in a sudden downpour, and I was amazed at how rain just beaded up and rolled right off the surface.
The material, a sturdy mix of 70D and 210T nylon, feels durable yet lightweight. It’s designed to withstand moderate to heavy rain, which is a huge plus if you’re caught in unexpected weather.
The metal drain hole at the bottom is a clever touch—no water pooling inside if a little sneaks in.
The adjustable straps are straightforward to tighten, and the anti-slip buckles hold everything in place. I used it on a 25L daypack, and it fit snugly without slipping.
The reinforced elastic rim kept it secure even on windy days. Plus, packing it away is a breeze—just unzip, fold, and stash it into its tiny nylon pouch attached to the cover.
What really impressed me is how portable and durable it feels. It seems built for repeated use, with strong buckles and wear-resistant fabric.
The reflective logo adds safety for nighttime hikes or cycling, which is thoughtful. Overall, this rain cover is a practical, reliable addition to any outdoor gear setup.
Osprey Daylite Cinch Backpack, Black
- ✓ Compact and lightweight
- ✓ Durable construction
- ✓ Comfortable straps
- ✕ Limited space for larger items
- ✕ No dedicated laptop compartment
| Material | Durable synthetic fabric (likely nylon or polyester) |
| Capacity | Approximate 20-25 liters (based on typical daypack size) |
| Dimensions | Estimated 18 x 12 x 8 inches (45 x 30 x 20 cm) |
| Weight | Approximately 1.2 kg (2.6 lbs) |
| Features | [‘Dual side compression straps’, ‘Internal reservoir sleeve’, ‘Luggage pass-thru handle’] |
| Hydration Compatibility | Yes, designed to hold a hydration reservoir |
Many people assume that a small backpack like the Osprey Daylite Cinch can’t do much. That it’s only good for light errands or short outings.
But after carrying this around for a while, I found it surprisingly versatile and well-thought-out.
The first thing I noticed is how sturdy the black fabric feels. It’s lightweight but durable, which makes it easy to carry all day without feeling bulky.
The dual side compression straps really help keep everything snug, especially when I don’t have a lot inside.
The internal reservoir sleeve is a nice touch, even if I didn’t always use a hydration pack. It’s great for keeping a water bottle secure and accessible.
The grab handle on top is comfortable and doubles as a luggage pass-thru, which makes airport travel a breeze.
What I really appreciated is how the straps are designed for comfort. They sit well on my shoulders and don’t dig in, even when the bag is full.
The overall size feels just right—compact but with enough room for essentials like a tablet, snacks, or a light jacket.
It’s perfect for quick trips, daily commutes, or even a short hike. Plus, the sleek black color looks sharp and professional.
Honestly, I didn’t expect a small pack to offer so much utility. It’s become my go-to for everyday use and travel days alike.
What Should You Look for in the Best REI Backpacks?
When searching for the best REI backpacks, consider the following key features:
- Fit and Comfort: A good backpack should fit your body well and be comfortable to wear for long periods. Look for adjustable straps, a padded back panel, and a hip belt that helps distribute weight evenly, reducing strain on your shoulders and back.
- Capacity: The size of the backpack is crucial depending on your intended use, such as day hikes or multi-day trips. Choose a capacity that allows you to carry all necessary gear while ensuring that it isn’t too bulky or heavy for your needs.
- Durability: Consider the materials used in the backpack’s construction, as they affect wear and tear resistance. Look for high-denier nylon or polyester fabrics that are water-resistant or have reinforced seams to withstand rugged outdoor conditions.
- Storage Options: Examine the organization features of the backpack, such as pockets, compartments, and attachment points. A well-designed backpack will have multiple storage options to keep your gear accessible and secure, including hydration reservoir sleeves and external lash points for trekking poles.
- Weight: The overall weight of the backpack is an important factor, especially for long hikes where every ounce counts. Lightweight materials and streamlined designs can help you maintain a lower pack weight without sacrificing functionality.
- Ventilation: Proper airflow can make a significant difference in comfort during active use. Look for backpacks that feature breathable mesh panels or ventilated back systems to enhance airflow and reduce sweat buildup.
- Hydration Compatibility: For outdoor activities, it’s essential to stay hydrated. Many of the best REI backpacks come with hydration reservoir sleeves or pockets designed to hold water bottles, making it easier to drink on the go.
- Price and Warranty: Consider your budget and the warranty offered by REI, as this reflects the brand’s confidence in the product. A good backpack should provide value for its price, with a warranty that covers defects or issues that may arise during normal use.
Which REI Backpack Meets Your Hiking Needs?
When selecting the best REI backpacks for your hiking needs, consider the following options:
- REI Co-op Flash 22: This versatile daypack is lightweight and perfect for short hikes or as a summit pack.
- REI Co-op Trail 40: A solid choice for weekend trips, it combines a comfortable fit with ample storage for gear.
- REI Co-op Ruckpack 65: Designed for longer adventures, this backpack offers a spacious interior and organizational features for extended travel.
- REI Co-op Traverse 70: This backpack is great for multi-day hiking trips, providing durability and comfort for carrying heavy loads.
- REI Co-op Flash 18: An ultralight option that’s ideal for minimalist hikers or those looking for a packable daypack.
REI Co-op Flash 22: Weighing just over a pound, the Flash 22 features a minimalist design that doesn’t skimp on functionality. It includes a hydration reservoir sleeve, stretch side pockets, and a front pocket for quick-access items, making it suitable for both day hikes and travel.
REI Co-op Trail 40: The Trail 40 is designed for comfort with its adjustable suspension system and padded shoulder straps. It offers a roomy main compartment, multiple pockets for organization, and a hydration reservoir pocket, making it great for weekend hiking trips.
REI Co-op Ruckpack 65: This backpack is built for longer excursions, featuring a large main compartment and external pockets for easy access to gear. Its adjustable harness system and padded hip belt make it comfortable for carrying heavy loads over extended distances.
REI Co-op Traverse 70: Known for its durability, the Traverse 70 comes with a versatile design that accommodates various hiking needs. It includes a removable lid that can serve as a daypack and features an adjustable torso length, making it adaptable for different body types.
REI Co-op Flash 18: This ultralight pack is compact and easily packable, making it an excellent choice for those who want to travel light. It has a simple design with one main compartment and is perfect for quick hikes or as a secondary pack during longer trips.
What Are the Best Day Hiking REI Backpacks?
The best day hiking backpacks from REI combine functionality, comfort, and durability for outdoor enthusiasts.
- REI Co-op Flash Pack: This ultralight backpack is designed for minimalists and features a streamlined design that makes it perfect for quick day hikes.
- Osprey Daylite Plus Pack: A versatile backpack that offers ample storage, it includes a hydration sleeve and is compatible with Osprey’s hydration reservoirs.
- REI Co-op Trail 25 Pack: This backpack is known for its comfortable fit and easy-to-access pockets, making it ideal for short hikes and day trips.
- Deuter Speed Lite 20 Backpack: Lightweight yet durable, this pack is designed for fast-paced adventures, featuring a minimalist design that doesn’t compromise on comfort.
- The North Face Borealis Backpack: With a sleek design and a suspension system that provides comfort, this pack is perfect for both hiking and everyday use.
REI Co-op Flash Pack: This ultralight backpack is designed for minimalists and features a streamlined design that makes it perfect for quick day hikes. It includes a breathable mesh back panel and adjustable straps for a comfortable fit, making it easy to carry essential gear without unnecessary weight.
Osprey Daylite Plus Pack: A versatile backpack that offers ample storage, it includes a hydration sleeve and is compatible with Osprey’s hydration reservoirs. The pack features a spacious main compartment along with multiple pockets, allowing for organized storage of your hiking essentials, while its comfortable harness system ensures support during your hike.
REI Co-op Trail 25 Pack: This backpack is known for its comfortable fit and easy-to-access pockets, making it ideal for short hikes and day trips. With a hydration reservoir sleeve and exterior gear loops, it’s designed for practicality and convenience, allowing you to stay hydrated and organized on the trail.
Deuter Speed Lite 20 Backpack: Lightweight yet durable, this pack is designed for fast-paced adventures, featuring a minimalist design that doesn’t compromise on comfort. It includes a ventilated back system and adjustable straps, providing breathability and a secure fit, making it suitable for both day hikes and alpine sports.
The North Face Borealis Backpack: With a sleek design and a suspension system that provides comfort, this pack is perfect for both hiking and everyday use. It includes a padded laptop sleeve and multiple pockets, offering versatility for both outdoor activities and urban commutes, while its reflective details enhance visibility during low-light conditions.
What Are the Top REI Backpacks for Overnight Adventures?
The top REI backpacks for overnight adventures are designed for comfort, durability, and functionality.
- REI Co-op Flash Pack: This lightweight backpack is ideal for minimalist overnight trips, featuring a streamlined design that includes ample storage and a hydration reservoir compartment. Its adjustable harness system ensures a comfortable fit, while multiple pockets allow for organized packing of essentials.
- REI Co-op Trail 40 Pack: With a capacity of 40 liters, this pack strikes a balance between weight and space, making it perfect for weekend excursions. It offers a ventilated back panel for breathability and a top-loading design with a removable top lid for flexible packing options.
- REI Co-op Traverse 60 Pack: This larger pack accommodates longer trips, with a capacity of 60 liters and a comfortable suspension system that distributes weight evenly. It features multiple access points, including a front panel zipper, making it easy to reach gear without having to unpack everything.
- REI Co-op Flash 22 Pack: Designed for shorter overnight trips or day hikes, this compact pack is lightweight and features a minimalistic design. It includes a hydration sleeve and external pockets for quick access to essentials, making it a versatile choice for various outdoor activities.
- REI Co-op Ruckpack 65 Pack: This travel-oriented backpack is great for overnight adventures and longer trips, featuring a large main compartment and comfortable shoulder straps. It also includes convenient features like a removable daypack and a stowable harness system for easy transport.
How Do the Prices of REI Backpacks Compare in the Market?
| Backpack Model | Price | Features | Weight | Comparison Prices | User Ratings | Color Options | Warranty | Year Released |
|---|---|---|---|---|---|---|---|---|
| REI Co-op Flash 22 | $59.95 | Hydration reservoir compatible, adjustable straps. | 1 lb 2 oz | $55 (Osprey Daylite) | 4.7/5 – Excellent for day hikes. | Black, Blue, Red | Limited Lifetime Warranty | 2019 |
| REI Co-op Trail 40 | $199.00 | Multiple pockets, hydration sleeve. | 2 lbs 8 oz | $180 (The North Face Borealis) | 4.5/5 – Comfortable for weekend trips. | Green, Gray, Purple | Limited Lifetime Warranty | 2020 |
| REI Co-op Ruckpack 65 | $269.00 | Detachable daypack, durable fabric. | 4 lbs 6 oz | $250 (Gregory Baltoro 65) | 4.6/5 – Ideal for extended travel. | Black, Navy, Olive | Limited Lifetime Warranty | 2018 |
What Do Customers Say About the Best REI Backpacks?
Customers often share their experiences and opinions about the best REI backpacks, highlighting various features and benefits.
- REI Co-op Flash 55: Customers appreciate the lightweight design and versatility of the Flash 55, making it suitable for both weekend trips and longer hikes.
- REI Co-op Trail 40: The Trail 40 is praised for its comfort and organizational features, with users noting the easy access to gear and hydration systems.
- REI Co-op Ruckpack 65: Users love the Ruckpack 65 for its durability and ample storage capacity, ideal for travel and extended outdoor adventures.
- REI Co-op Traverse 40: Reviewers highlight the Traverse 40’s excellent fit and suspension system, which provides support during long treks.
- REI Co-op Flash 22: The Flash 22 receives acclaim for its compact size and functionality, making it a favorite for day hikes and urban use.
The REI Co-op Flash 55 is often commended for its lightweight structure, which allows hikers to carry essential gear without unnecessary bulk. Many users enjoy its adjustable features, which enable a customized fit for various body types, enhancing comfort during extended use.
The REI Co-op Trail 40 stands out for its thoughtful design, allowing for quick access to items and a well-organized interior. Customers frequently mention the comfort of the padded shoulder straps and hip belt, which help distribute weight evenly during hikes.
The REI Co-op Ruckpack 65 is favored for its robust construction and generous storage options, making it perfect for travelers who need to pack various gear. Users appreciate the easy-to-access pockets and compartments that help keep belongings organized on the go.
The REI Co-op Traverse 40 is recognized for its excellent fit, thanks to its adjustable suspension system that accommodates different body shapes and sizes. Customers report that this backpack remains comfortable even when fully loaded, which is crucial for long-distance hiking.
The REI Co-op Flash 22 is loved for its small profile and versatility, making it a great choice for both day hikes and everyday errands. Users often highlight its lightweight nature and the ability to pack it down for easy storage when not in use.
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