For use in warm, calm water by confident swimmers. The elegant design is always out of your way, but turns into a simple, buoyant bubble if you need it. This is the ultimate paddling PFD for easy water.Features: Intended Use: SUP / Fishing / Canoeing Entry: Front Buckle Foam Insert: Inflatable (manual by 16g CO2 or breath) Shell Fabric: 200 x 400 Denier Ripstop Nylon Liner Fabric: 200 Denier High Tenacity Nylon Webbing: Polypro Zipper: YKK Non-Corrosive Coil Hardware: Heavy Duty Acetal Weight: .78 lbs / 12 oz / 350 gr (with no CO2 cartridge) Sizing: Universal - Chest 31 Inflation: 16 Gram C02 cylinder with 3/8" thread (1 Included) Design Buoyancy: 22 lbs Approval Type: USCG Type V