Sugoi Men's SubZero Zap Tight Flexible polyester spandex blend moves with your body so you can move the way you need to Convenience features like small inside pocket for keys and valuables, and zip ankles for easy on and off Elasticized waistband with pre-laced drawstring to keep tight from slipping or falling down Polyester and spandex blend with a brushed interior for soft warmth and durable water repellent exterior for keeping you dry Reflective tape at thighs provides increased visibility