Light weight and low profile for safety and peace of mind. This PFD remains cool while wearing in heat of the summer and can be worn over wet weather clothing in winter. Can be used for recreational boating, fishing, stand up paddle boarding, sailing, and hunting. The 33 gram models feature a zipper pouch for storage,Note: Manual / Automatic PFD inflates upon immersion in the water or when the wearer pulls the inflation handle. Coast Guard Type: USCG Type V. (has Type III Performance) Flotation: Co2 Cylinder-Halkey Roberts mechanisms Shell: Durable 100 % polyester outer Closure: 1.5″ nylon belt w/ buckle