The Onyx Adult General Purpose Life Vests are your standard three buckle type vests that provide safety for all types of water activities. These are lightweight, basic life vests that will not be as comfortable as the smaller auto-inflate models, but they offer the peace of mind that they will serve to keep the wearer afloat. Great to store in the boat or use for additional guests. Adjustable belts and chest strap insures you’ll be able to accommodate many different sized adults.