Features: 

1.Material: waterproof nylon with high cloth of 600D

2.One size fit all.  It fit for adult and kids.

3.For swimming & fishing & saving life, hung your neck and tied to the waist so that keeps you and your child safe in water

4.Accessory: 2pcs reflective band & one rescue whistle & 33g CO2 cylinder & single chamber

5.33g CO2 cylinder. it can be used one time, you should replace another one next time. So s est to buy one more for using

6.Color can be customized while your quantity is exceed to 2,000pcs

7.Fashionable design, various of styles are available or as customers' request

products index:

1.Flotage : ≥150N

2.Weight≤0.85kg

3.Inflatable forming time≤5s
4.Floating time≥24h
5.After 24h, buoyancy loss ≤5%

6.Product validity:3 years

Working principle of pneumatic:

Manual inflation: Before or after falling into the water, driving force of the rope to open the inflatable device, until the bar go not less than 90 degrees; When pricker broke the diaphragm of high-pressure gas cylinders, the high-pressure carbon dioxide gas break into the air bag and then buoyancy is happening.

Automatic inflation: After a life jacket falling into the water, the submerged automatic device to soften the water-sensitive components, firing pin stop loss, done to promote the firing pin spring punctured diaphragm seal carbon dioxide gas cylinder filled balloon buoyancy generated.
Inflated by mouth blown: Blowing nozzle is a one-way valve, after blowing it will be self-closed.