Airbag protective vest. Color: Navy Size: S, M, ML, L Gas Cartridge: 50cc, 60cc Weight: S: 1.05kg. (50cc cartridge) M: 1.1kg. (50cc cartridge) ML: 1.2kg. (60cc cartridge) L: 1.25kg. (60cc cartridge) Material: 600D Polyester, Polyester Mesh, Nylon Lipstop Airbag: Polyurethane Cylinder accommodation: Newly improved Average inflation speed: 0.1 seconds Connection system: Easy Click