HIT Inflatable Life Jacket (Auto Hydrostatic)- MD3157The Inflatable Lifejacket with HIT (Hydrostatic Inflator Technology) is the first Transport Canada approved lifejacket in Canada. The Hydrostatic Inflator Technology offers reliable inflation in a low maintenance design that will only automatically inflate when submerged in 4 or more inches of water and not inadvertently due to rain, spray or humidity. Exclusive to Mustang Survival in North America and maintenance free for 5 years or until inflated.