Bullet proof ballistic nylon fabric resists wear. moisture. dirt and abrasion. Carry-on size fits in the overhead of most U.S. domestic airlines. First to feature an easy access compartment for shoes. toiletries or return-home laundry storage. Features a built-in protective sleeve for up to a 15.6 inch laptop. Spacious .fully lined interior. Silent-running. double spinner wheels assure smooth maneuverability and keep zero weight on your arm. Telescoping pull handle locks in two positions to accommodate 2 or 4 wheel use. Easy to grab bottom handle is great for overhead compartment or car trunk lifting.