Water and electronics don't mix. Neither do water and wallets, phones, or that sandwich you packed for the ride. If you're heading out on your Sea-Doo, keeping your essentials protected from splashes, spray, and the occasional unexpected swim is non-negotiable. That's where a quality REI dry bag comes in, and REI offers some of the most reliable options on the market for waterproof storage that actually works.
At seadoooutlet, we know Sea-Doo owners take their gear seriously. Whether you're cruising on a Spark, pushing a GTX, or loading up a Switch pontoon for a day with family, storage space on watercraft is limited and every item needs to earn its place. Dry bags solve a real problem: they let you bring what you need without worrying about water damage. REI stocks several standout options, from their own Co-op brand to premium picks from Sea to Summit, and choosing the right one depends on how you ride.
This guide breaks down five REI dry bag options that work well for Sea-Doo storage and boating applications. We'll cover capacity, durability, closure systems, and which bags make sense for different setups, so you can grab the right one and get back on the water.
1. REI Co-op lightweight dry sack
The REI Co-op lightweight dry sack is a straightforward roll-top bag that handles the essentials without overcomplicating things. This rei dry bag uses 70-denier nylon with a polyurethane coating to keep water out, and the construction balances durability with packability. You get a bag that stuffs down small when empty but holds its shape when loaded, which matters when you're wedging gear into a Sea-Doo storage compartment or clipping it to a pontoon rail.
Best uses on a Sea-Doo
You'll find this dry sack works best for smaller personal items like phones, wallets, keys, and first-aid supplies. The roll-top closure seals tight enough for splashes and spray, though full submersion isn't recommended. On a Spark or GTX, toss it in the front storage bin. On a Switch pontoon, clip the built-in daisy chain to a rail or tuck it under a seat.
This bag shines when you need quick access to essentials without opening a larger storage system.
Key features to check
The roll-top closure uses a three-fold system that creates a secure seal when you roll it down and clip the buckle. Check that the welded seams sit flat and the fabric feels consistent across all panels. REI Co-op bags typically include a D-ring or loop at the top for clipping to lash points, which is useful when deck space is tight.
Size picks for common gear
REI offers this dry sack in 5L, 10L, 20L, and 35L capacities. For a phone, wallet, and keys, the 5L works. A 10L fits towels and a change of clothes. Go with 20L for snacks, drinks, and extra layers for multiple passengers.
What it typically costs at REI
Prices run from $15 for the 5L up to $30 for the 35L at REI. Sales can drop these by 20 to 30 percent during seasonal promotions.
2. Sea to Summit lightweight dry bag
Sea to Summit builds dry bags that prioritize reliability over extras, and their lightweight series delivers exactly that. This rei dry bag uses 70-denier nylon with a reinforced base and fully taped seams, which means it handles rougher treatment than most basic roll-tops. The fabric resists punctures better than thinner materials, and the construction holds up when you're tossing gear around a Sea-Doo deck or stuffing it into tight storage bins.
Best uses on a Sea-Doo
This bag works well for mid-priority items like extra clothing, sunscreen, snacks, and backup electronics. The roll-top closure seals against spray and splashes, though you should avoid prolonged submersion. On a GTX or RXT, it fits in rear storage compartments. On a Switch pontoon, secure it under a seat or clip it to a rail using an aftermarket carabiner.
Key features to check
Look for the oval-shaped base that sits flat and stable when you load it. The closure system uses a stiffened roll-top strip with a side-release buckle, which creates a secure seal in three to four rolls. Verify that the taped seams run clean without gaps or lifted edges.
Size picks for common gear
Sea to Summit offers this bag in 4L, 8L, 13L, and 20L sizes. A 4L holds wallets and phones. An 8L fits a couple of towels. Go with 13L for a full change of clothes and toiletries.
What it typically costs at REI
Expect to pay $20 for the 4L up to $35 for the 20L at REI. Prices stay consistent year-round with occasional markdowns during member sales.
REI members get 10 percent back on full-price purchases, which offsets costs on higher-capacity bags.
3. Sea to Summit Evac lightweight compression dry bag
The Sea to Summit Evac lightweight compression dry bag adds a compression valve that lets you squeeze excess air out after you seal it. This rei dry bag uses the same 70-denier nylon construction as the standard lightweight model but includes a one-way purge valve at the base. When you roll the top down and press on the bag, air escapes through the valve while water stays locked out. That shrinks the packed size by 30 to 40 percent, which matters when you're fitting gear into a Sea-Doo's limited storage compartments.
Best uses on a Sea-Doo
You'll want this bag for bulky soft items like towels, spare wetsuits, extra clothing, and sleeping bags if you're packing for an overnight trip. The compression feature reduces volume without compromising waterproof protection, so you can fit more in your Sea-Doo's front bin or under a Switch pontoon seat. The valve keeps water out even when compressed, so you don't sacrifice protection for space savings.
Key features to check
Look for the dual-layer purge valve at the bottom of the bag and verify it sits flush without damage. The roll-top closure works like the standard model, but you'll need to press down on the bag after sealing to activate compression. Check that the fabric around the valve shows no tears or separation from the base panel.
Size picks for common gear
Sea to Summit offers this in 5L, 8L, 13L, and 20L capacities. An 8L compresses a towel and swimsuit down to fist size. A 13L handles two full changes of clothes.
Compression bags work best when you fill them at least 70 percent full, which gives you enough material to press against.
What it typically costs at REI
Prices range from $25 for the 5L up to $45 for the 20L at REI. The compression valve adds about $5 to $10 over standard dry sacks.
4. ALPS Mountaineering Torrent dry bag multi-pack
The ALPS Mountaineering Torrent multi-pack gives you three dry bags in graduated sizes for organizing different gear types. This rei dry bag set uses 420-denier ripstop nylon with RF-welded seams, which resists abrasion better when you're stacking bags in Sea-Doo storage compartments.
Best uses on a Sea-Doo
The multi-pack works when you carry gear for multiple passengers or separate wet items from electronics. Use the small bag for phones and wallets, the medium for towels, and the large for life jackets or snacks. Different sizes let you organize by priority without digging through one oversized bag.
Key features to check
Look for the roll-top closure with side-release buckle and verify RF-welded seams show no separation. The 420-denier fabric feels stiffer than thinner options but holds up better against sharp edges. Check each bag includes a D-ring at the top for securing to deck hardware.
Size picks for common gear
Standard packs include 10L, 20L, and 30L bags. A 10L fits phones and wallets. A 20L handles towels and clothing. The 30L holds life jackets or food.
Multi-packs save money over individual bags and force you to organize gear by category from the start.
What it typically costs at REI
REI stocks this at $45 to $55, which breaks down to roughly $15 to $18 per bag when you buy the set instead of individual dry sacks.
5. ALPS Mountaineering Clear Passage dry bag
The ALPS Mountaineering Clear Passage dry bag stands out because you can see what's inside without opening it. This rei dry bag uses a clear vinyl window panel on one side while the back remains opaque 420-denier ripstop nylon. The window lets you identify contents at a glance, which cuts down on time spent digging through bags when you need something specific. RF-welded seams keep water out just like the Torrent model, but the visibility feature makes this option more practical for frequently accessed gear.
Best uses on a Sea-Doo
You'll want this bag when you carry multiple similar items like different electronics, first-aid supplies, or assorted tools. The clear panel eliminates guesswork, so you grab the right bag on the first try. On a GTX or Wake, keep it in front storage where you can pull it out quickly. On a Switch pontoon, mount it near the helm where passengers can access their own gear without asking what's in each bag.
Key features to check
Check that the clear vinyl panel shows no yellowing or cloudiness and verify the RF-welded seams attach cleanly to both the clear and nylon panels. The roll-top closure uses the same side-release buckle system as other ALPS bags.
Clear panels work best when you organize items inside so they face the window, which takes an extra second but saves time later.
Size picks for common gear
ALPS offers this in 10L, 20L, and 30L sizes. A 10L shows phone and wallet clearly. A 20L displays folded towels and clothing.
What it typically costs at REI
REI prices these at $20 for the 10L up to $40 for the 30L. The clear panel adds about $5 over standard opaque models.
Next steps for keeping gear dry
Picking the right rei dry bag from REI sets you up for reliable waterproof storage, but the bag itself is just one part of keeping your Sea-Doo gear protected. You need to match bag capacity to what you're actually carrying, which means testing a few rides to see what you bring most often. Most riders overpack at first and then dial in a system that works after a few trips on the water.
Storage on Sea-Doo watercraft works best when you pair dry bags with purpose-built accessories designed for your specific model. Covers, rails, and dedicated storage solutions keep everything secure when conditions get rough. At seadoooutlet, we stock protective gear and accessories that complement your waterproof storage setup, from boat covers that shield your entire rig to mounting hardware that keeps bags in place. The right combination of dry storage and Sea-Doo-specific gear means you spend less time worrying about what might get wet and more time riding.
