AF19722-7X000390 Polyester fabric used for backpack.Comfort carryng thanks to the adjustable shoulder strap and back in mesh fabric.Big front pocket to put away items.Composition:Main Fabric:100% Polyester.Second Fabric:100% Polyester.Outside Coating:100% Polyurethane.Fabric:100% Polyester.Lining:100% Polyester.