100% Nylon Lightweight 20-liter roll-top dry bag is a classic, versatile dry storage and organizing option for backpacking, hiking, camping, sea kayaking, ski touring, cycling and travel Manufactured from lightweight PU-coated 70D nylon with a DWR finish; secure Hypalon roll-top closure; interior polyurethane coating is white to improve visibility into bag contents Waterproof seams are double stitched and tape sealed; D-ring and base lash loop provide easy Low-profile, streamlined shape saves space, and oval base resists rolling; patent-pending field repair buckle can be replaced in seconds 20-liter dry bag measures 10.7 x 9.2 x 18.8 inches when closed, and weighs 0.2 pounds, volume is 20 liters (with closure rolled three times) The Sea to Summit Lightweight Dry Bag is a classic, versatile dry storage and organizing option for backpacking, hiking, camping, sea kayaking, ski touring, cycling and travel. Manufactured from bluesign-approved, recycled 70D nylon with a non-PFC DWR finish (10,000mm waterhead—the higher the waterhead rating, the more waterproof the fabric). Its waterproof seams are double stitched and tape sealed and the secure Hypalon roll-top closure is non-wicking to keep contents dry. A D-ring at the closure and base lash loop provide easy attachment points, and are compatible with the Sea to Summit Dry Bag Sling Strap (sold separately). The Sea to Summit Lightweight Dry Sack’s oval base resists rolling, and its low-profile, streamlined shape saves space. A patent-pending field repair buckle can be replaced in seconds with a Phillips screwdriver. Dry bag is available in seven sizes: 1.5 liter, 3 liter, 5 liter, 8 liter, 13 liter, 20 liter, and 35 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.