Made with AWEAR-TECH 37.5 technology, this suit features fabric that is triggered by your body temperature to either warm or cool you depending on the situation. The active particles permanently embedded in the yarn capture heat from your body's infrared energy to speed evaporation and cool you if moisture vapor (sweat) is present, or retain that heat to keep you warm when its not. The result is a suit that works as hard as you dokeeping you comfortable and polished, no matter the conditions.