NOTE: BLACK SIZE SMALL AND MEDIUM Body Glove Insotherm Short Arm Surf Shirt .5mm CLOSEOUTBody Glove Insotherm Ti-Si Titanium Short Arm Surf Shirt .5mm is made of .5mm titanium throughout. It is constructed with flatlock stitching and is anatomically cut. It features a waistband drawcord and a bordshort connector. Unisex sizing.