Micro-Elite XT is our mountain weight, single face stretch base layer that can also be used as a mid layer. These men's base layer tights are the perfect choice for when it's really cold and layering is a must! The 4-way stretch fabric and flatlock seam construction ensure you have total freedom of movement and maximum comfort. They're designed to keep you at the optimal temperature no matter what your activity. The smooth face makes these thermal tights easy to layer another garment over it. NO fly front. Durable smooth outer face for easy layering tights Soft, brushed fleece backing Gusset eases movement and reduces seam bulk Covered elastic waistband for added warmth & comfort UPF 40 protection 90% Nylon, 10% Spandex Inseam M 28.5" Mountain weight warmth, active fit