Map Terminal Jacket SmallWhen it comes to defying the elements in Winter, it takes more than just a thick jacket to do the job; for our new thermal range we're offering the ultimate mix of heat retention and waterproofing thanks to the unique properties of PrimaLoft. Originally developed for the US Army, PrimaLoft insulation is a synthetic material that mimics the softness and insulation of natural down, consisting of ultra fine fibres that trap heat, even when wet. used