The ultra-durable Discovery™ Deck Dry Bag is our top-of-the-line dry bag loaded with features while delivering resolute waterproof protection from day trips to expeditions. Whether lashed to a paddle board, stowed in (or on) a kayak, slung over a shoulder, strapped atop a car, or attached to a motorcycle, you can count on the Discovery Deck Dry Bag's heavy-duty, waterproof performance. The Discovery is available in 10L, 20L, 30L & 50L. PurgeAir™-equipped: Our unique and waterproof PurgeAir valve vents trapped air, helping the dry bag compress further after being sealed, and is both more durable and more reliably waterproof than waterproof/breathable fabric membranes. Adaptable: Adjustable carry strap and multiple lash points make it easy to carry or anchor the bag. Built for the journey: Made of rugged, flexible, and fully waterproof materials designed to withstand frequent and demanding use. Light-colored interior: Significantly eases identification of contents within.* Oval bottom: Stable shape won't easily roll around; it's also easy to store, stack, and pack. Durably constructed: Fully welded seams result in stronger and more durably waterproof construction compared to sewn-and-taped seams. Tight, simple sealing: DrySeal™ roll-top closure makes it easier and more intuitive to achieve an optimal seal. PVC-Free: Materials have a reduced environmental impact over vinyl-coated materials. *Note: The light-colored interiors are achieved by using materials with non-dyed white threads that have a clear interior coating and a solid-colored exterior coating. The plaid bags use materials with dyed threads and clear coatings inside and out—they do not have as light of an interior as a solid-colored bag, though still maintain some translucence.