MTI SUP Safety Inflatable Belt Pack Lifejacket (PFD) Inflatable collar-style life vest in a small neoprene backed comfortable belt pack Manual Co2 cylinder operation with large easy-to-find release handle; bayonet style cylinder included Clear window allows easy checking of arming status of Co2 cartridge Strap mounted D-rings and zippered top pocket offer storage or attachment of day-use essentials such as keys, waterproof camera, of water bottle US Coast guard type III approved; meeting USCG carriage requirements