In most states you won't need another layer all winter long. In fact, if this pant doesn't keep you toasty enough, it might be time to consider moving to a warmer climate. Made of a dense single layer of 3SP®. It's tightly woven on the outside to shut out the wind and snow, and brushed on the inside to keep in the warmth. Two zip pockets. 29" inseam. Classic rise. Catalog/web only. XS(2), S(4-6), M(8-10), L(12), XL(14).