NIKE Men's Dri-FIT Run Speed Power Tights 717750 Compression fit provides a high level of support across key muscles, for exceptional mobility. High-stretch Dri-FIT fabric helps you stay dry, comfortable and on the move. The zip pocket on the center-back has a vapor barrier to help protect stored items. Low-profile waistband and drawcord for a secure, comfortable fit Reflective details enhance visibility in low light