The Osprey Ultralight Pack Liner 20L is engineered to keep your gear dry and organized in the most demanding conditions. Built from high-tenacity 40D Nylon Ripstop, this siliconized liner features a fully waterproof roll-top closure and taped seams to provide a high level of protection against moisture. Its rectangular shape is specifically designed for efficient packing, allowing it to fit seamlessly into the contours of your backpack. Key features include a white interior for better visibility of contents and a durable, lightweight fabric that minimizes pack weight. Material: 40D Nylon Ripstop. Weight: 80g. Dimensions: 44cm x 25cm x 15cm.