Detailed Product Description Manual & automatic inflatable life vest * 150N life vest * Inflate by 33g CO2 cylinder * CCS certificate * Portable & comfort Features: 1. One size fit all. 2. 33g CO2 cylinder. It can be used one time, you should replace another one next time 3. Construction:waterproof nylon with 33g co2 cylinder and single chamber 4. For swimming, fishing and saving life in port & river 5. Various of styles are available or as customers' request 6. Accessory: 2pcs reflective band and one rescue whistle 7. It can be hung your neck and tied to the waist so that keeps you and your child safe in water. Products index: 1. Flotage : 150N 2. Weight: 0.9kg 3. Inflatable forming time: 5s 4. Floating time: 24h 5. After 24h, buoyancy loss 5% 6. Product validity: 3 years.