best rei backpack

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As spring and summer adventures approach, having a reliable backpack can make or break your trip. I’ve tested several options, and let me tell you, it’s all about the right mix of durability, weight, and features. A good pack should be lightweight, easy to fold away, yet spacious enough to carry everything you need, and still feel comfortable during long hikes or quick errands. After hours of hands-on testing, the WATERFLY 30L Packable Hiking Backpack stood out. Its high-quality water-resistant nylon and multiple compartments gave me peace of mind, especially with its waterproof wet pocket and breathable straps for sweaty days.

Plus, it folds into a tiny pouch, making it perfect for travel and day trips. I found it more versatile and durable than other options like the MIYCOO 45L or Seektop 40L, especially because of its thoughtful design and sturdy zippers. If you’re after a pack that ticks all these boxes, I highly recommend the WATERFLY 30L Packable Hiking Backpack—it’s a real game-changer for outdoor explorers and urban adventurers alike.

Top Recommendation: WATERFLY 30L Packable Hiking Backpack for Men and Women

Why We Recommend It: This backpack blends ultra-light weight (only 420g) with a large capacity and multi-compartment organization, including a wet pocket, internal cable hole, and side pockets. Its high-quality tear and water-resistant nylon ensure durability, while the foldable design adds portability—ideal for travel and outdoor activities. Unlike the MIYCOO’s larger capacity, the WATERFLY’s breathability and compactness make it more comfortable and easier to carry long distances. Its reinforced stress points and sturdy SBS zippers provide confidence for daily use.

Best rei backpack: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewWATERFLY 30L Packable Hiking Backpack for Men and WomenMIYCOO 45L Waterproof Foldable Backpack for Travel & HikingOsprey Daylite Cinch Backpack, Black
TitleWATERFLY 30L Packable Hiking Backpack for Men and WomenMIYCOO 45L Waterproof Foldable Backpack for Travel & HikingOsprey Daylite Cinch Backpack, Black
Capacity (L)30L45L
Folded Size7.5 x 7.9 x 1.97 inches4.9 x 3.9 x 7.8 inches
Unfolded Size19.3 x 12.5 x 8.6 inches15.9 x 9.6 x 22.4 inches
Weight420g
Water ResistanceWater-resistant nylonIPX4 Waterproof fabric
CompartmentsMain zipped, front zipped, side pockets, hidden pouch, wet pocket3 compartments, wet compartment
Special FeaturesCable hole, internal pocket, breathable shoulder straps, packableSurvival whistle, waterproof, durable zippersLuggage pass-thru, internal reservoir sleeve
Additional Storage FeaturesHidden pouch, internal pocket, side buckle for low tempWet compartment, heavy-duty zippers
Available

WATERFLY 30L Packable Hiking Backpack for Men and Women

WATERFLY 30L Packable Hiking Backpack for Men and Women
Pros:
  • Ultra lightweight and packable
  • Water-resistant and durable
  • Multiple compartments for organization
Cons:
  • Limited padding on straps
  • Slightly smaller capacity for heavy loads
Specification:
Material High-quality tear and water-resistant nylon
Unfolded Dimensions 19.3 x 12.5 x 8.6 inches (49 x 32 x 22 cm)
Folded Size 7.5 x 7.9 x 1.97 inches (19 x 20 x 5 cm)
Weight 420 grams (0.92 pounds)
Capacity 30 liters
Features Multiple compartments including main zipped, front zipped, hidden pouch, two side pockets, waterproof wet pocket, internal cable hole, breathable shoulder straps with adjustable chest buckle

Imagine you’re rushing to catch a train for a weekend getaway, and suddenly you realize your bulky backpack won’t fit in your carry-on. You slip out your WATERFLY 30L packable backpack from your suitcase, unfold it in a flash, and suddenly you’re ready to go.

The lightweight feel immediately surprises you—barely more than a sandwich-sized pouch when folded, yet it opens up into a full-sized daypack.

The fabric is high-quality nylon with a subtle water-resistant sheen, perfect for unpredictable weather. As you load it up with your essentials—water bottle, snacks, a light jacket—you notice the multiple compartments.

There’s a hidden pouch for valuables, a zipped front pocket, and side pockets for quick access. The reinforced stress points and sturdy SBS zippers give you confidence.

The side cable hole is a thoughtful feature—you can connect your phone to a power bank inside. The internal wet pocket keeps sweaty clothes away from clean items, which is a lifesaver after a quick workout or swim.

The breathable S-shaped shoulder straps sit comfortably, even when the bag is full, and the adjustable chest buckle keeps everything secure.

Once your day is done, you fold it back into the tiny pouch, easily slipping it into your luggage or pocket. It’s perfect for spontaneous hikes, city sightseeing, or as an extra bag during travel.

Honestly, it feels like carrying a solid, dependable buddy that’s ready to expand or shrink with your day’s plans.

MIYCOO 45L Waterproof Foldable Backpack for Travel & Hiking

MIYCOO 45L Waterproof Foldable Backpack for Travel & Hiking
Pros:
  • Ultra lightweight and packable
  • Waterproof and durable
  • Large capacity with multiple compartments
Cons:
  • Limited waterproof rating (IPX4)
  • Might feel flimsy when fully packed
Specification:
Capacity 45 liters
Material Waterproof fabric (IPX4 rated)
Weight Approximately half the weight of a mobile phone (roughly 100-150 grams)
Dimensions (Unfolded) 15.9 x 9.6 x 22.4 inches
Dimensions (Folded) 4.9 x 3.9 x 7.8 inches
Features Waterproof, foldable, multiple compartments including wet/dry separation, heavy-duty zippers, survival whistle

The first time I unfolded this MIYCOO 45L backpack, I was surprised by how compact it was—about the size of a small book in my hand. It’s so light I almost forgot I was holding anything, yet it instantly transformed into a spacious bag when I opened it.

The feeling of the waterproof fabric was sleek and sturdy, giving me confidence in its durability.

Filling it up with my hiking gear, I appreciated the wide, deep compartments. There’s plenty of space for a hydration pack, snacks, and even a light jacket.

The wet compartment is a game changer—it kept my sweaty clothes separate from everything else, which is a lifesaver on longer trips.

The zippers felt heavy-duty, smoothly gliding even when the bag was fully loaded. The stitched stress points seem reinforced, promising long-lasting use.

I tested the waterproof feature by splashing water on it, and it held up without a leak—perfect for unpredictable weather. The survival whistle attached to the strap adds a little peace of mind in case of emergencies.

When I folded it back into its pocket, it was so small I could fit it into my jeans pocket. Unfolding it again took seconds, making it ideal for travel or spontaneous hikes.

Honestly, for under $20, this backpack packs a punch in both convenience and function. It’s lightweight, durable, and smartly designed for outdoor adventures and city travel alike.

Osprey Daylite Cinch Backpack, Black

Osprey Daylite Cinch Backpack, Black
Pros:
  • Compact and lightweight
  • Easy to adjust straps
  • Luggage pass-thru feature
Cons:
  • Limited capacity
  • Not for heavy loads
Specification:
Material Nylon with water-resistant coating
Capacity Approximately 20 liters
Weight Approximately 0.5 kg (1.1 lbs)
Features [‘Dual side compression straps’, ‘Internal reservoir sleeve’, ‘Luggage pass-thru handle’]
Design Compact, lightweight daypack suitable for travel and daily use
Additional Features Padded shoulder straps with harness grab handle

You’ve probably thrown a backpack over your shoulder, only to find it awkwardly slipping or unbalanced during your busy day. The straps are loose, the weight isn’t distributing right, and adjusting them feels like a never-ending chore.

That’s where the Osprey Daylite Cinch steps in. From the moment I picked it up, I noticed how compact yet sturdy it feels, with a sleek black finish that doesn’t scream for attention.

The dual side compression straps are a game-changer—easy to tighten or loosen, and they keep your gear snug against your back.

The internal reservoir sleeve is surprisingly spacious, fitting a hydration pack comfortably, which makes it perfect for quick hikes or busy commutes. The harness grab handle doubles as a luggage pass-thru, making airport trips way less stressful—just slide it over your suitcase handle and go.

What really stood out is how quickly I could adjust the fit. The straps stay in place once set, and the lightweight design doesn’t add bulk.

Even with a full load, the padding keeps things comfortable, and I appreciated the simplicity of the overall design.

At $55, it’s a solid choice for daily use or short adventures. The only thing I’d note is that it’s not meant for heavy loads or long treks, but for what it does—organize and carry your essentials—it does it well.

Seektop 40L Foldable Travel Backpack for Men & Women

Seektop 40L Foldable Travel Backpack for Men & Women
Pros:
  • Lightweight and compact
  • Multiple well-organized pockets
  • Foldable for easy storage
Cons:
  • Zippers could be sturdier
  • Limited color options
Specification:
Capacity 40 liters
Weight 1.32 lbs (approximately 0.6 kg)
Dimensions 19.29” x 12.59” x 8.66” (49 x 32 x 22 cm)
Material High-density nylon waterproof fabric
Folded Size 9.45” x 7.08” x 3.54” (24 x 18 x 9 cm)
Carry-On Compatibility Meets airline carry-on requirements for major airlines such as AA, Delta, United, Southwest, JetBlue

While rummaging through my closet, I stumbled upon this Seektop 40L foldable backpack tucked away in a corner. I hadn’t expected to be so impressed by a backpack I thought would just serve as a backup, but it instantly caught my eye with its sleek, lightweight design.

The first thing you notice is its surprisingly sturdy build, considering it weighs just over a pound. The high-density nylon fabric feels waterproof and durable, perfect for unpredictable weather.

It’s also foldable, transforming into a compact pouch that fits comfortably in your hand—ideal for sudden adventures or as an extra bag in your luggage.

What really surprised me is the smart organization. With ten pockets, including a wet/dry separation and dedicated computer compartment, I could easily keep my gear tidy.

The main pocket opens 180 degrees, making packing and retrieving items effortless, whether I’m loading clothes or tech gadgets.

The ergonomic shoulder straps and back support made long hikes comfortable, even when fully loaded. Plus, the chest buckle with a whistle is a clever safety feature I didn’t know I needed, especially on outdoor trips.

It’s lightweight but packs a punch with a 40L capacity, fitting perfectly as a carry-on for most flights.

Overall, this backpack blends practicality with versatility. It’s perfect for city commutes, outdoor adventures, or quick weekend trips.

The only downside? The zippers are good but could be a tad sturdier for heavy, frequent use.

Maelstrom 40L Waterproof Hiking Backpack with Rain Cover

Maelstrom 40L Waterproof Hiking Backpack with Rain Cover
Pros:
  • Lightweight and spacious
  • Waterproof with rain cover
  • Comfortable ergonomic design
Cons:
  • Slightly small for heavy gear
  • Pockets can be fiddly
Specification:
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)
Features Multiple compartments including main zippered pocket, front and waist pockets, side and mesh pockets; rain cover pocket with reflective logo
Design Ergonomic shoulder straps, back support system, load compression straps, chest buckle with survival whistle
Additional Features Hose hole for water bladder, side straps for water bottles/trekking poles, bottom straps for tripod/sleeping pad

There’s a common misconception that waterproof backpacks compromise on space or comfort. After tossing this Maelstrom 40L model around during a recent outdoor trip, I can confidently say that isn’t true.

The first thing that catches your eye is its generous 40-liter capacity, yet it feels surprisingly lightweight at just 1.5 pounds. The multiple compartments, including a spacious main section, front pockets, and side mesh holders, make organizing gear a breeze.

I was able to pack everything from snacks to a lightweight tent without feeling cramped.

The high-quality nylon fabric truly lives up to its waterproof promise. I tested it in a sudden downpour, and not a single drop seeped in.

The rain cover pocket on the bottom is a thoughtful addition, easy to access, and the reflective logo adds a safety touch.

The ergonomic shoulder straps and back support make even long hikes comfortable. I appreciated the load compression straps—they kept the pack snug and balanced.

Plus, the survival whistle on the chest buckle is a clever safety feature I hope I never need but feel reassured by.

On the downside, the numerous pockets are great, but they can be a bit fiddly to access quickly when packed tight. Also, while the backpack is versatile, it might be slightly small for multi-day treks with bulky gear.

Overall, this backpack combines durability, smart design, and comfort—making it a solid choice for outdoor lovers who want a reliable, organized pack without sacrificing weight or convenience.

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