The Osprey Ultralight Raincover is rain protection for your backpack. The Ultralight Raincover is available in three sizes, covering packs ranging from 30L to 110L. The 40D nylon ripstop protects your belongings as you hike quickly to your next camp, or speed back to the trailhead. The harness attachment and cinch belt wraps all the way around your pack, preventing it from being blown off in high winds. When the rain lets up and sun begins shining, tuck the rain cover into the included carrying case for the next time Mother Nature unleashes her tears.