Our CONTOURweight base layer fabric collection features gridded Waffle Fleece construction enhancing both wicking efficiency and breathability by generating channels of contact points on your skin that absorb moisture then wick it to the outside of the fabric. This speeds up the evaporation & quick-drying process while air channels trap warm air so you don't get chilly. Our CONTOURweight base layer fabric construction reduces weight while increasing warmth and compressibility, resulting in a impressive warmth-to-weight ratio. Enhance your layering system by combining with our SILKweight or TEMPOweight base layer products underneath.