Nike Element Thermal Men's Running Pants, Black, Large Body: Dri-FIT 89% polyester / 11% spandex. Zoned Shield fabrication offers wind and water resistance Zoned Shield fabrication offers wind and water resistance Breathable stretch Dri-FIT jersey helps keep you dry and comfortable Reflective lower-leg zips offer ventilation and visibility Elastic waist with interior drawcord for a snug, adjustable fit Side zip pockets for secure storage