Fabric type 75% spandex, 15% polyester, 10% nylon Care instructions Hand Wash Only Premium 4 Way Stretch polyester/spandex material. Smooth, flat, double stitched interlocking seams Anti odor fabric wicks moisture and controls body temperature Compression fit w/ elastic waistband for a comfortable, secure fit Inner Cup Pocket w/ velcro closure will fit nearly any cup. These shorts also wear excellent without a cup Wear either Alone or under Board or Thai Shorts