4 way stretch fleece tights
excellent next to skin layer
comfortable underlayer
great layer to be active 
Fabric Type: Designed to be worn as a first layer, Polartec® Power Stretch® fabrics keep you dry and happy featuring a comfortable body-hugging 4-way stretch that is very breathable. Suggested uses: Wear next to skin during high aerobic activity in cool to cold weather Functions as base layer, insulation and outerwear Body-hugging 4-way stretch for freedom of movement Wicks moisture from your skin to keep you dry and comfortable Dries two times faster than cotton Highly breathable Wind resistant to reduce the effects of wind chill; abrasion resistant Soft, inner layer provides next-to-skin comfort Adds warmth without weight Most versatile insulation Machine washable