Hydrowear ACLIMATEX Breathable fabric has been specifically developed to provide maximum protection against rain, snow, wind and cold in the most extreme conditions. The waterproof breathable membrane is laminated to the inside of a tough polyester outer fabric which provides excellent durability against abrasion. Breathability rating is about the best in the market at RET 5.2. All seams are reinforced and sealed. This over trouser is usually combined with the ACLIMATEX unlined jacket to make a wetsuit ideal for work or outdoor leisure pursuits.