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OverBoard 20L Dry Tube Review: Carry, Closure, and Water Limits
The OverBoard 20L Dry Tube is a compact, carry-friendly option for towels and spare clothes. Its IP66 rating is for brief submersion, not a promise that contents stay dry during a long dunk; use a separate waterproof case for electronics.
By Sebastian · Published October 16, 2026 Research synthesis
The short answer
The OverBoard 20L Dry Tube is a practical size for spare layers, towels, and other soft gear that needs a separate dry zone on a boat or kayak. It weighs 0.47 kg, measures 44 cm high by 25 cm across, and has both a top handle and a removable shoulder strap.
The important limit is its seal: the merchant lists IP66 and explicitly describes brief submersion, while warning that water can seep in if the bag remains underwater. We would use it for splash and quick dunk exposure after carefully rolling the top, not as a stand-alone case for a phone or camera.
Capacity and carry: a compact day-trip bag
Twenty litres is enough room for a change of clothes, a towel, and a light layer without asking a small boat locker to take a full-size expedition duffel. The cylindrical 44 × 25 cm shape is easy to picture, but measure the locker opening and the space around the bag before buying.
The removable shoulder strap helps with the walk from parking to launch; the top handle gives you a quicker grab when moving around the boat. Dry Bags UK lists 600D nylon-coated PVC tarpaulin, welded seams, a reinforced abrasion-resistant base, and a 0.47 kg empty weight. Those are useful construction details, not a Cast & Cruise durability test.
The closure is the water-control step
The merchant’s instructions are specific: pinch the top, roll it tightly at least three or four times, and secure the buckle. A rushed single fold is not the same seal. Keep fabric out of the fold, close the buckle fully, and inspect the opening after loading.
IP66 is not a long-submersion guarantee. Dry Bags UK says this model is briefly submersible and its rating FAQ warns that an IP66 bag may admit some water during submersion. If your plan involves repeated immersion or high-value electronics, choose a purpose-built submersible case and put it inside the bag.
20L or 65L: which dry-bag size fits the trip?
For one person’s spare clothes or towels, this 20L tube is easier to tuck away than a large duffel. The NRS Bill’s Bag 65L is a different tool: it has over three times the capacity, a fold-down StormStrip closure, four compression straps, and a removable padded backpack harness. Its 14-inch diameter and 24-inch packed height need a larger, secure storage spot.
Neither soft bag should be your only protection for a device that cannot get wet. Use a separate case for electronics, and open and dry the bag after the trip so damp fabric is not sealed away.
Price, delivery, and the Dry Bags UK offer
The Dry Tube was listed at £29.99 GBP on October 16, 2026. The product page’s shipping table showed UK methods; U.S. delivery and the final delivered amount were not verified. Check the destination and total before comparing it with a locally shipped alternative.
The supplied partner record lists SEBASTIANBASSOL for 10% off. Eligibility, acceptance, and stacking were not tested. The Dry Bags UK offer page has the canonical code and tracked route.
Verdict
The OverBoard 20L Dry Tube makes sense when capacity, simple carry, and a compact locker fit matter more than a hard shell. Close the fold top exactly as instructed and keep a second barrier around electronics. If you need more room for an overnight load, compare it with the 65L Bill’s Bag; if you need reliable extended submersion protection, choose a case built for that job.
See the Dry Bags UK offer and delivery details · Compare dry storage for a small boat or kayak
Sources checked
This review is based on the sources below and is labeled by review type above. Product pricing and availability can change.
What we liked
- +The 20-liter capacity and 44 × 25 cm listed dimensions give a useful starting point for measuring a boat locker.
- +A top handle, removable shoulder strap, and included clip make it easier to move between the dock and boat.
- +The store explains the fold-seal routine and the brief-submersion limit for this IP66 model.
Watch-outs
- –The listed water limit is brief submersion; the merchant says some water can seep in if an IP66 bag stays submerged.
- –A soft roll-top does not replace a hard case or a secondary waterproof enclosure for critical electronics.
- –The price is in GBP, and delivery to the United States was not confirmed in the product listing.
Bottom line
Choose the 20L Dry Tube when you want one modest soft bag with a shoulder strap and can close the roll top carefully. Step up to a larger bag for bulky or overnight loads, and double-bag anything that cannot tolerate water.