Mustang Survival HIT Inflatable PFD The Hydrostatic Inflator Technology (HIT) offers reliable inflation in a low maintenance design that will only automatically inflate when submerged in 4' or more of water pressure and not inadvertently due to rain spray or humidity. Exclusive to Mustang Survival in North America and maintenance-free for 5 years from date of manufacture or until inflated. Made for the most severe marine environments the HIT Inflatable PFD will meet the challenges of the most demanding users. It also features the patented SecureZip closure system to ensure the PFD will stay closed during even the most rigorous activity and still opens effortlessly upon inflation. This light weight and comfortable PFD can be worn over a t-shirt on warm days or over thicker garments in colder conditions. It is low profile and allows for maximum mobility. Neoprene Comfort Collar adjustable waist and minimal material in the back make for an unparalleled all-day comfort. PFD - Personal Floatation Device Approval: USCG -- Recreational Type II (Meets minimum buoyancy rating of 33.7 LBS) Commercial Type V (Type II performance approved only when worn) Hydrostatic Inflator Technology (HIT) will only inflate when submerged in 4' or more of water pressure and not in rain spray or high humidity 38 LBS of buoyancy when inflated Manual inflation handle allows you to inflate the vest at any time Status indicator window: green means it's ready to go