TYR Men's Fusion 2 Jammer Swim Suit 80% Polyester/ 20% Lycra Imported Built from a variety of interworking, patented technologies, racing suit is built for competition With hydrophobic construction and low-profile flatlock stitching, suit reduces drag for maximized performance in the water Fabrication Logic and Fluid Channel Dynamics allow for superior flow Calenderized Isolated Compression improves glide efficiency and increases speed 80 percent Polyester and 20 percent Lyrca.