Eyson Life Jacket Automatically inflates when submerged in water or when the wearer manually pulls the handle. Equipped with a backup oral inflation tube on the left of the life jacket. Provides comfort, safety, and peace of mind for the sportsman, flatwater paddler, or recreational boater without knowing you have it on, until you may need it. Quick Release Buckle: High-quality plastic buckle for easy on-and-off. Adjustable strap webbing and buckle: Easily every single inflatable life jacket has tested twice, each time for 24 hours. The first test for the inflate device, second for chamber air leakage Exquisite bag for easy storage What's in the package? 1 x Tyson rearming kit Rearmament kit for this life jack Asin: B07BSB5X3L Cylinder Capacity: 33 grams Buoyancy: 150N Specification: 1/2-inch thread.