Osprey’s High Visibility Rain Cover protects your gear from rain, snow, and sleet. Reflective graphics and a blinker light attachment point to provide extra visibility in low light situations make this cover ideal for urban bike commuters. Extra small fits 10 - 20 liter packs. Small fits 20 - 35 liter packs.Features Full wrap around cinch attachment Reflective graphics Loop for blinky light attachment (light not included) Packs into its own carrying case Extra small fits 10 - 20 liter packs. Small fits 20 - 35 liter packs Specs XS: VOLUME: 1220 IN3 / 20 L WEIGHT: 0.18 LBS. SM: VOLUME: 2135 IN3 / 35 L WEIGHT: 0.24 LBS. FABRIC: MAIN: 70D Nylon Ripstop ACCENT: 210D Nylon Ripstop BOTTOM: 70D Nylon Ripstop