The GF640 is constructed of 100% Cordura for outstanding abrasion resistance along with good flexibility for comfort. Features include pleated back, wrap-around belt, stretch knkit armholes, tapered epaulets, G-flex elbow and knee pads. the terrycloth liner wicks moisture away from your body for a natural cooling effect. The layers of suit fabric are quilted together for durability with all structural seams safety stitched.