Shaped to mesh seamlessly with your pack, Osprey's Backpack Liners protect the gear you carry inside your pack from the weather outside. The Osprey Small liner is ideal for for 30-50 Litre packs.Features Roll-top waterproof closure Rectangular shape for efficient packing Waterproof-coated fabric and seams Perfect for 30-50 Liter packs. Fabrics40 Denier Nylon Ripstop Dimensions (cm)52 h x 29 w x 30 d Volume40 Litres Weight90 grams Osprey Backpack Pack Liner Small Size For Packs 30 to 50 Litres