Biltwell Inc. Solo Seat - Diamond - Black S2-VIN-00-BD 1/8in. (3mm) thick, stamped steel pan with welded carriage bolts on nose and tail for spring and hinge mounting Stamped-in ridges on the pan increase stiffness and give the pan a clean, classic look with a matte black electroplated finish Covers are hand-stitched, heavy-duty black vinyl Foam is molded polyurethane, approximately 1in. thick Compared to the original Solo seat, the new Solo 2 has a shorter overall length and two more inches of kick in the tail to deepen the seating area and improve its visual flow on bikes with steep backbones