The insulating layer in this Undersuit is made of high class compressed Thinsulate™ BZ 200. This insulation absorbs less than 1% of its weight, so even in damp conditions Thinsulate™ BZ 200 retains its insulating ability. This breathable material guarantees thermal balance of the diver's body. The outside layer is made of Pertex - thin, slippy, but hard-wearing and breathable fabric. The lining is made of micropolar 190 g/m2. Undersuit BZ 200 is good for cold water - with suitable underwear it can be used for long dives in extremaly difficult conditions. Read how this model was made. >>>