ESPECIALLY BREATHABLE, ULTRA COOL. Light as air. Cool as a breeze. The Nike Dri-FIT ADV TeckKnit Ultra Tank Top uses breathable, sweat-wicking technology to keep you out of the heat so you can focus on the trail ahead. The modern design is engineered for movement so you feel free with every step. Less sweat, better feel Nike Dri-FIT ADV technology combines moisture-wicking fabric with advanced construction and elements to keep you comfortably dry. The minimalist seam allows for a soft, smooth feel. Cooler comfort in hot areas Breathable knit fabric at the chest and upper back provides air circulation and a cool feel while you run. We tested real runners (like you) to find out where your body heats up the most to ensure ventilation in key areas. The look of a classic The knit structure of the top forms the iconic Nike chevron on the front, recalling the look of the Windrunner jacket from 1978. More Details 100% polyester Machine washable Imported