The Sea to Summit Big River Dry Bag offers heavy duty dry storage, for river trips in a kayak, canoe, or raft, as well as motorcycle touring, bike packing, and other outdoor adventures. Manufactured from lightweight, waterproof TPU-coated 420D nylon, with a 10,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric), and a triple-coated base for strength. Its reinforced waterproof seams are double-stitched, and tape sealed, and the secure Hypalon roll-top closure features D-rings for easy attachment, easy-grab handles that won’t snag, and multiple lash points for gear attachment and stacking; can be used with Sling Strap (sold separately, 65L dry bag not compatible). The Sea to Summit Big River Dry Bag’s low-profile, streamlined shape saves space, its oval base resists rolling, and the white laminate interior makes it easy to see bag contents. A patent-pending field repair buckle can be replaced in seconds with a Phillips screwdriver. Available in six sizes: 5 liter, 8 liter, 13 liter, 20 liter, 35 liter, and 65 liter, to carry everything from small essentials to group gear. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.