I. T. 100 was designed with style. This easy to wear and easy to use inflatable PFD features Membrane Inflatable Technology inside to reduce product weight and create a lighter and more flexible fit. This inflatable PFD is approved by the U. S. Coast Guard (USCG) for use as a Type III Personal Flotation Device Type V (Commercial Use) PFD. It is not approved for water skiing or other high impact, high-speed activities. The M. I. T. 100 is easy to inflate in an emergency.