Designed for the hottest summer days, the Patagonia Capilene Cool Trail Tank Top delivers airy comfort not only in its design, but in its soft and breathable fabric construction. New to Patagonia's lineup of performance tops, Capilene Cool Trail is a comfortable fabric with the softness of cotton and the exercise-ready performance of a polyester. It's designed specifically for active summer days, giving you enhanced breathability and moisture-wicking performance that'll take the sting out of working out in high temps. The tank top design allows for maximum airflow during movement, and a drop-tail design ensures consistent coverage while you move. Plus, with Polygiene anti-odor technology, you won't have to worry about funky fumes filling up your car on the drive back from the trailhead.