The perfect base layer bottom to keep you warm and dry in cold, unforgiving weather. 100% cotton; ringspun. Stain Breaker (TM) technology releases stains for easy care. Rain Defender(TM) treatment repels water. Fabric wicks moisture for dry comfort. Durably reinforced seams. Rib-knit cuffs help to keep out the elements. Tagless label for irritation-free comfort. Style: 100640.