Mustang Survival M.I.T. 100 Manual ActivationFEATURES 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. The M. I. T. 100 was field tested and approved with a rating of 9. 5 10 by the North American Fishing Club. Manual inflation only will only inflate when you pull the activation cord 500 Denier Cordura outer shell Exclusive Membrane Inflatable Technology inflation cell Inflator