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. Perfect for 70-100 liter packs. Key Attributes 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 fabricsGRS-certified 100% recycled main body fabricsAll DWR treatments made without PFAS Features Roll-top waterproof closure Waterproof-coated fabric and seams Rectangular shape for efficient packing Small: suits 30-50lt packs Medium: suits 50-70lt packs Small: suits 70-100lt packs Weight Small: 91g Medium: 116g Large: 152g