These black color winter leggings really do the trick in keeping your lower limbs warm on cold days. Excellent 5.11 quality all over. The leggings feature a nylon/poly/spandex blend to wick away moisture and stay in place without riding up or hanging loose. A compression fit at the calf keeps the leggings from riding up too high. The seams are flat-sewn to reduce friction and chafing, a mesh insert at the crotch keeps that area breathable, and the whole fabric is moisture wicking.