Completely waterproof protection for your pack that compresses into a tiny stuff sack and deploys quickly when you need it most. Osprey recommends purchasing the larger size if you’re on the fence. For instance if you have a 75 liter pack Osprey recommends you purchase the Extra Large instead of the Large.
Ultralight Raincover Extra Large – Fits 75-110 liter packs
Ultralight Raincover Large – Fits 50-75 liter packs
Ultralight Raincover Medium – Fits 30-50 liter packs