Shaped to fit seamlessly with your pack, the large Ultralight Pack Liner is designed to protect the gear you carry inside your pack from the weather outside, giving you extra peace of mind in wet and rainy conditions. FEATURES Roll-top waterproof closure Waterproof-coated fabric and seams Rectangular shape for efficient packing BUILD YOUR OWN PACKING SYSTEM Part of a coordinated system for optimized packing. Customize your experience by adding on smart packing and organization accessories that meet your exact needs. OSPREY ACCESSORIES INNOVATION All of our accessories have been overhauled to offer better organization, operation, comfort and reduced environmental impact. SUSTAINABLE DESIGN + bluesign® approved main body fabrics+ GRS-certified 100% recycled main body fabrics+ All DWR treatments made without PFAS FABRIC bluesign® approved 100% recycled 40D high-tenacity nylon Specifications Small Medium Large Volume Range 30 - 50L 50 - 70L 70-100g Weight 90g 110g 150g