Best Waterproof Backpacks of 2026: Tested in Canyons, Rivers, and Oceans
Most backpacks marketed as waterproof are actually just water-resistant — they keep light rain out but fail under submersion. A truly waterproof backpack needs sealed seams, waterproof zippers, and airtight construction that survives full immersion.
We test our packs by fully submerging them in rivers, swimming through canyon pools, and dragging them over rocks. If your phone and food come out dry after that, the pack passes.
The Best Waterproof Backpacks of 2026
1. Sko Gear Coqui 22L — Best Day Pack
$250 | 100% Airtight & Submersible
Why it wins: Fully airtight and submersible with a unique side zipper for easy access. Floats when air-filled — perfect for swimming and kayaking. Abrasion-resistant and puncture-proof.
Best for: Day hikes, canyoneering, kayaking, beach days
Capacity: 22 liters
2. Sko Gear Karpathos 34L — Best All-Rounder
$300 | 100% Submersible
Why it wins: The vertical zipper design is a game-changer — access anything in the pack without unpacking from the top. The detachable 4L waterproof top pouch keeps snacks and first aid within reach.
Best for: Canyoneering, overnight trips, river crossings
Capacity: 34L + 4L detachable pouch
Side-by-Side Comparison
| Feature | Coqui 22L | Karpathos 34L |
|---|---|---|
| Price | $250 | $300 |
| Capacity | 22L | 34L + 4L pouch |
| Waterproof | 100% airtight | 100% submersible |
| Access | Side zipper | Vertical zipper |
| Flotation | Floats when sealed | Buoyant when sealed |
| Extra storage | — | 4L detachable top pouch |
| Best for | Day trips | Day-to-overnight |
Need More Capacity? The Mojave Drainage Pack
Mojave 60-70L — $259.99
Important: The Mojave is NOT a waterproof/airtight pack. It is a modular drainage backpack — water flows in and drains out fast. For multi-day wet canyoneering where fast drainage beats sealed compartments.
Use internal dry bags, or nest a Coqui 22L inside as a waterproof inner compartment.
"This pack is a game changer for canyoneering." — Mitch A.
How to Choose
By Trip Length
- Day trips (4-8h): Coqui 22L
- Full-day to overnight: Karpathos 34L
- Multi-day: Mojave 60-70L + dry bags
By Water Exposure
- Rain only: Any pack works
- Splashing/wading: Coqui or Karpathos
- Full submersion: Coqui or Karpathos (airtight)
- In & out all day: Mojave (drainage)
Complete Your Kit
FAQ
What makes a backpack truly waterproof vs water-resistant?
A truly waterproof backpack uses sealed seams, waterproof zippers, and airtight construction. You can fully submerge it and everything stays dry. Water-resistant packs use coatings that eventually fail under pressure or submersion.
Can I swim with these backpacks?
Yes — both the Coqui 22L and Karpathos 34L are 100% submersible. Customers have swum with them in canyons, lakes, and oceans. The Coqui also floats when sealed with air inside.
How long does the waterproof zipper last?
With proper care (slow, straight closure and occasional grease), waterproof zippers last for years. The Coqui includes complimentary maintenance grease. All packs are covered by a Limited Lifetime Warranty.