Osprey’s Airporter Backpack Travel Cover is designed shield your pack from unnecessary damage incurred during transit. Lockable zippers provide an extra layer of security for your gear when you’re on the road. Size large designed for packs 70 - 110 liters. Protects backpacks when traveling or checking in at airports Compact duffel to carry extra gear Large lockable zipper opening for easy loading Comfortable stow away shoulder strap Top and side grab handle ID card window Size large designed for packs 70 - 110 liters.