8 Best Dry Bag Backpacks of 2026, Tested on the Water

There’s a particular kind of trip where the boat carries the weight and the pack only has to get from the truck to the water and back: a two-person tent, a camp chair, a canopy, and clothes for a few days. The 85L Earth Pak is the biggest bag in this group and the only one built for that scale, which is why it’s here at all.

It’s the same abrasion-resistant 500D PVC as the smaller Earth Paks, with a large zippered front pocket, a mesh pocket inside, an IPX8 phone case in the box, and a five-year warranty. Empty, it’s listed at two and a half pounds. The pack straps cinch down hard, so a half-filled 85L stops sloshing around like a bin bag and starts behaving closer to a 35L.

Where it lands for us: excellent as a gear hauler for a multi-day float, awkward the moment you have to walk any real distance with it loaded. Internal organization is thin for the volume — one front zip and one mesh pocket — so pack in stuff sacks or you’ll be excavating to the bottom for a headlamp. If you’re hiking in rather than floating in, take the 40L.

Piscifun undercuts every other 20-liter bag in this group and still fits two shoulder straps, a fully welded seal, and an IPX8 phone case. On paper it looks like the bargain of the group, and for a day bag that’s most of what matters.

Twenty liters is a towel, a change of clothes, lunch, and a phone. The mesh outer pocket is the tell that this is a budget bag, and it’s a useful tell: it drains instantly, so wet shoes, an empty bottle, or a sandy shell go there and nothing else. We like the double straps because they turn a sack into something you can walk a mile with. The 500D PVC body is stiff and 1.6 pounds empty, so it isn’t the bag for a luggage-only trip — it’s the bag for the boat, the river, and the back of the truck.

Six point eight eight ounces. The Osprey Ultralight weighs less than a filled water bottle and compresses down to roughly the size of a fist when it’s empty, which is the entire argument for owning one.

It’s 20 liters of waterproof-coated recycled nylon with a roll-top closure, mesh shoulder straps, an adjustable sternum strap, and stretch pockets on the sides for a bottle. The sternum strap is what keeps it steady when you’re moving — without it, a pack this light tends to migrate.

The rating is where you have to read carefully. IPX5 means it shrugs off rain and spray but isn’t submersible, so this is the pack for a wet hike or a ferry crossing, not for a day when the bag might go in the water. The light fabric tells the same story: it never complains about being stuffed in a suitcase, and it wears faster than 500D PVC if you drag it over rock. For rain, that’s exactly the job it’s rated for.

For travel, this is the one we take: it disappears into a suitcase, comes out for a rainy day hike, and handles a full day of walking without a second thought. Anyone whose trips involve actual submersion should look at the welded PVC bags instead.

Rolling this one shut takes a bit of muscle at first. The vinyl body is stiff and the top doesn’t fold over as obligingly as the thinner bags here, which is a small annoyance every time you open and close it. What that stiffness buys is a 25-liter pack with a wet/dry mesh front pocket, cargo straps, a reflective strip across the front, and an over-molded top handle.

The front pocket is why we pick it for a beach day: sandy sandals, a dripping swimsuit, and empty bottles ride outside the dry compartment held by the cargo straps, while towels and clothes stay dry inside. The shoulder straps are padded and detachable, which makes it one of the few here that works as a backpack on the walk in and a plain sack once it’s on the boat.

Webbing loops and D-rings run down the sides of the Cressi, and they’re the reason to look at it: clip fins, a wet bag, or a dive light to the outside and keep the 30 liters inside for things that have to stay dry.

The body is PVC-coated polyester and nylon with a roll-down top and plastic clip, plus a front zip pocket for the small stuff that usually sinks to the bottom of a dry bag. The 20L and 30L sizes get two shoulder straps, so it wears like a backpack instead of hanging off one shoulder all day.

The detail we noticed reading the listing: Cressi’s own description promises protection from splashes, spray, and sudden rain, and stops there. That’s a boat-and-dive-bag claim rather than a submerge-it claim, and it’s worth taking at face value. For dive decks and rocky shore entries, with a two-year limited warranty behind it, it earns its place; for a pack you plan to dunk, the welded PVC bags here are the safer bet.

The clear PVC body is what sells this one: you can see the sunscreen, the keys, and the dry T-shirt without unpacking anything, which matters more than it sounds when your hands are wet and sandy. It’s a 5-liter bag with a roll top, a shoulder strap, a side handle, and it comes with a waterproof phone case.

On durability it’s the weakest bag in this group. The sides are 0.3 mm PVC against a 0.6 mm base, and tearing is where it comes up short. The thicker floor is a sensible place to put the extra material, since that’s what scrapes along a boat deck, but we treat the HEETA as a pool bag, a spare, or a kid’s water-day kit rather than something to trust with a camera. For that job, the price is the whole point.

At 17.7 inches tall and under 10 inches wide, the IDRYBAG is the narrowest bag here, and that shape does real work: it stands upright in a footwell, slides down between seats, and takes up less room on a crowded deck than a wide duffel.

The build is 500D vinyl-coated woven polyester with welded, watertight seams, and the closure is a straightforward roll — load it, roll three or four times, clip the buckle. Inside there’s a zip pocket for keys and a phone, and outside there’s a zippered front pocket that IDRYBAG describes, unusually honestly, as splash-proof rather than waterproof.

At 800 grams empty it sits in the middle of this group: heavier than the 6.88-ounce Osprey, lighter than the big PVC haulers. The adjustable shoulder straps handle 20 liters of day gear without any drama on a walk in.

Where it lands for us: the tidiest of the small bags, with an internal layout that beats the other 20-liter packs here and a front pocket honesty we’d like to see from everyone else. It doesn’t match the 40L Earth Pak on capacity or the Piscifun on price, but if you want your keys, phone, and snack in their own places, this is the one.