Five Seasons Climate Control “SUPER UNDERWEAR” is worn next to the skin. Climate Control is a special polyester fabric with a non-absorbent fibre construction that allows moisture to proceed through to next garment. The woven channels on the inside provide air circulation and create a microclimate next to the skin, keeping you dry and sweat free. Climate control transport moisture away from the skin. Climate Control is light and flexible. Climate Control is fast drying.