Castelli Free Aero Race 4 Team Bibshort Medium BlackThe Castelli Free Aero Race 4 Team Bibshort has a dual layer lumbar support band to keep the shorts in place. The Forza fabric on the inner legs is comprised of 38% Lycra to fit great. The mesh back has bonded 2 layer bib straps for excellent breathability. The raw-edge leg ending has vertical silicone grippers. There are reduced seams to prevent irritation. The Progetto X2 Air Seamless Seat Pad gives you comfort all day long while you train. Available in Black/Black Stitching and Dark Steel Blue.8055688802851