Airline and security restrictions necessitate the need for travel bags to be compact, mobile, easy access luggage. Covert Cases use resilient materials that provide durable structural protection with the least weight possible. All cases convert to a shoulder bag or backpack.Pack MaterialsPack Body: 500D ATY nylon 6,6 silicone treated PU is an air textured yarn chosen for its durability and aesthetic properties. Silicone treatment helps prevent dirt, snow and water pick-up.Shoulder Straps: 500D ATY nylon 6,6 silicone treated PU is used in shoulder straps for its durability, aesthetic properties and silicone treatment that helps prevent dirt, snow and water pick-up. EVA(R) 50 closed cell foam is low profile and foldable. Burly(TM) Double Weave is a resilient stretch woven fabric with strength and durability combined with next-to-body comfort. One Size: 0.98 kg / 35 oz / 40 LActivity: Travel/CommuteModel: 12403