Shaped to fit seamlessly with your pack, the medium 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 50-70 liter packs. Key Attributes BUILD YOUR OWN PACKING SYSTEMPart 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 INNOVATIONAll 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 Features Roll-top waterproof closure Rectangular shape for efficient packing Waterproof-coated fabric and seams Perfect for 50-70 Liter packs. Fabricsbluesign® approved 100% recycled 40D high-tenacity nylon Dimensions (cm)61 h x 37 w x 31d Volume58 Litres Weight116 grams Osprey Ultralight Pack Liner - Backpack Liner Medium Size For Packs 50 to 70 Litres