The Mountain Hardwear Power Stretch Tights offer superior warmth if you need a base layer for extremely cold weather. Made of luxuriously soft, fast-wicking Polartec Power Stretch fabric, these tights hug your body comfortably and will keep you both dry and warm when worn underneath an outer shell. The gusseted crotch help increase freedom of movement and the flat lock seams won't lead to irritation. A perfect choice for layering in harsh winter environments.