This is the Akona Tanami Roll-top Sling Dry Backpack Features: Water Resistant, Durable, & Easy to Wipe Clean Comfortable & Durable Design 3-Roll Top & Squeeze-Style Side-Release Buckle Closure Radio Frequency Welded (RF) Seam Construction Bag Seals Out Water, Dust, Dirt. Mud & Debris Removable Sling Strap Strong & Durable PVC Construction Perfect for Hiking, the Beach or On-the-Boat Side Mesh Pockets w/Drawstring Closure w/Barrel Lock Fastener Perfect for Water Bottles Bungee Cord w/Barrel Lock Fastener On Rear for Securing Gear to Bag Exterior Dimensions: (L x H x W) 23 x 12" x 8" (58.4cm x 30.5cm x 20.3cm) Volume: 2,208 cu. in. (36.2 liters) The Tanami is water resistant, durable, and easy to wipe clean. The roll top opening makes it easy to fill with gear. Comfortable and durable, the Tanami is perfect to bring on a hike, to the beach or on the boat."