Moisture Transport System - Wicks away sweat quickly to keep you dry and light Double layer design - Avoids riding up & pinching for greater freedom of movement Super soft stretch fabric &ÂErgonomic Flatlock Seams - Deliver a comfortable, chafe-free fit, move smoothly against your skin Stretch construction - Improves mobility for full range of motion like running, volleyball, gym fitness, dance, yoga, workout, rowing, cross country, etc If you prefer a loose fit, please order one size up