Best Dry Bag for Watersports Travel (2026)
by Yannick Schroth
Jul 25, 2026
11 min read
Photo: Enric via Pexels (free licence).
Waterproof performance depends on the model and how you close it; confirm the rating before you rely on it.
The versatile size for a day of kit on a boat, kayak or beach.
Browse on Amazon →Keeps phone, wallet and camera dry and to hand.
Browse on Amazon →A multi-pack covers everything from socks to a laptop.
Browse on Amazon →Recommendations by type and spec, not a tested product ranking; confirm fit/size with a shop. Any price is live at the retailer. (Amazon links are affiliate.) See our disclosure.
Key takeaways
- Own two: a small bag for valuables, a larger one for kit.
- Water-resistant, not dive-proof. Standard roll-tops are not for submersion.
- Welded seams beat stitched every time for keeping water out.
- Roll it right: three-quarters full, air out, fold at least three times.
- A phone pouch is the cheapest insurance against the classic soaked-phone disaster.
What size dry bag do you actually need?
Size is the first decision, and most people get one bag when they want two: a small one for valuables and a bigger one for gear. Rough guide:
| Size | Holds | Best for |
|---|---|---|
| 2 to 5 L | Phone, wallet, keys, passport | Valuables on a boat, beach or kayak |
| 10 to 20 L | Towel, layers, sun cream, snacks | A day out on the water |
| 30 to 40 L | Clothes and kit, worn as a backpack | Waterproof daypack / carry-on helper |
| 55 L and up | Wet dive or surf gear, wetsuit, fins | Hauling and separating wet kit |
For most watersports nomads, a 5 litre for valuables plus a 30 to 40 litre backpack-style bag covers almost everything, from boat dives to beach days to protecting your laptop bag in a downpour.
The honest bit: water-resistant, not dive-proof
This is where cheerful gear guides mislead people. A properly rolled dry bag keeps water out from rain, spray and brief dunks on a boat or kayak, and that is genuinely useful. But a standard roll-top dry bag is not designed to be submerged at depth and will leak if you hold it underwater or a wave holds it under. Do not put your camera in an ordinary dry bag and take it diving. If you truly need submersion, buy a bag specifically rated submersible, with fully welded seams and a closure built for it. For anything below the surface, use proper dive gear and housings, not a dry bag.
Splashproof vs submersible
- Splashproof roll-top (most bags): keeps out rain, spray and short splashes. Perfect for boats, beaches, kayaks and SUP. Lighter and cheaper.
- Submersible: fully welded seams and a closure designed to survive being held under. Costs more, worth it only if you genuinely dunk the bag.
For most travel, a good roll-top is all you need. Pay for submersible only if your use truly demands it, most people never do.
Materials and features that matter
- Material: heavy PVC tarpaulin is toughest and most abrasion-resistant (great for rough boat and gear use, but heavier); TPU and coated nylon are lighter and pack smaller. Welded, not stitched, seams are what keep water out.
- Backpack straps: turn a 30 litre-plus bag into a wearable pack, a big convenience for boat and shore access.
- Roll-top done right: at least three folds; some bags add a purge valve to squeeze air out.
- Clear window or colour: helps you find things; a bright colour is easier to spot if it goes overboard.
- D-rings and clips: to attach it to a boat or kayak so it cannot float away.
- Phone pouch: a touchscreen-friendly dry pouch lets you shoot through the window while staying dry.
How to actually use it (so it doesn't leak)
Most "the dry bag leaked" stories are user error. Do this: fill it no more than three-quarters, press out the excess air, then fold the top down firmly at least three times before clipping the buckle. The rolled folds create the seal, so an overfull bag or two lazy folds will let water in. Squeezing the air out also makes the bag smaller and less buoyant, handy in a packed boat. Clip it to something solid so it cannot slide overboard.
Picks by use (examples)
| Use | Examples | Notes |
|---|---|---|
| Valuables / phone | Small roll-tops & touchscreen pouches | 2 to 5 L; keep phone, cards, passport dry |
| Day pack (backpack straps) | Earth Pak, Sea to Summit, Overboard | 20 to 40 L; wear it to the boat or beach |
| Tough gear haul | Aqua Quest, heavy-PVC haul bags | 55 L+; wet wetsuits and fins |
| Submersible | Bags specifically rated submersible | Only if you truly dunk the bag |
These are examples, not a ranking; confirm the current size, material and (if claimed) submersible rating with the maker. Check dry bag prices on Amazon (affiliate).
FAQ: choosing a watersports dry bag
What size dry bag should I buy?
Match the size to the job. A 2 to 5 litre bag holds a phone, wallet and keys; 10 to 20 litres covers a day on a boat or beach with a towel and layers; 30 to 40 litres works as a waterproof backpack for gear; and 55 litres or more hauls wet dive or surf kit. Many watersports travellers own two: a small one for valuables and a large one for gear.
Are dry bags fully waterproof and can you dive with them?
Most dry bags are water-resistant, not dive-proof. A properly rolled dry bag keeps water out from rain, splashes and brief dunks on a boat or kayak, but standard roll-top bags are not designed to be submerged at depth and will leak if held underwater. For submersion you need a bag specifically rated as submersible; never trust an ordinary dry bag on a dive.
What is the difference between splashproof and submersible dry bags?
Splashproof (the common roll-top type) keeps out rain, spray and short splashes, ideal for boats, beaches and kayaks. Submersible bags have fully welded seams and a closure designed to survive being held underwater, and cost more. For most watersports travel a good roll-top is enough; only pay for submersible if you genuinely dunk your bag.
How do you close a dry bag properly?
Fill it no more than about three-quarters full, press out the excess air, then fold the top down firmly at least three times before clipping the buckle. The rolled folds are what create the seal, so too few rolls or an overfull bag will leak. Squeezing the air out also makes the bag more compact and less buoyant.
What material is best for a dry bag?
Heavy PVC tarpaulin is the toughest and most abrasion-resistant, good for rough boat and dive use but heavier. TPU and coated nylon are lighter with welded seams, better for hiking and packing small. For travel, pick tough material for a main gear haul and lighter material for a valuables pouch. Welded (not stitched) seams matter most for waterproofing.
Do you need a dry bag for a phone?
A small dry bag or a dedicated waterproof phone pouch is well worth it on boats, beaches and kayaks. Touchscreen-friendly pouches let you shoot photos through the window while keeping the phone dry, and a small dry bag protects your phone, cards and passport together. It is cheap insurance against the single most common watersports mishap: a soaked phone.
Yannick Schroth
Founder of NOMADREEF and a former digital nomad. This guide covers how to size and use a dry bag and its real limits; product names are examples, and you should confirm the current size, material and any submersible rating with the maker before buying. About the author · LinkedIn ↗
Sources
- Dry bag material, sizing and closure conventions (general watersports gear guidance). seatosummit.com.
- Our own travel scuba gear and packing guides.