Fit & Design: Stripped down to the essentials for ultra lightness Perforated waistband & laser-cut ventilation for max breathability Every Session Carry pocket system keeps your phone, keys, and money secure and out of the way Bonded hems for no-bulk, lightweight performance Technology: Cling-free, ultra-wicking shell for complete mobility Anti-chafe and permanent silver ion anti-odor treatment boxer brief liner Sweat wicking and quick drying Additional Details: Fabric Content: 86% Polyester / 14% Spandex