The Carbon Zipper Back Short john with Pad features advanced welded seams that offer greater strength, produce less drag and maximize comfort across all three disciplines; A carbon AMP pad keeps you cool and unrestricted on the bike and run; A silicone beaded leg griper and 12-Inch zipper with removable clip lanyard ensure you have a snug, comfortable and secure fit; The carbon material is UPF50+ and ITU compliant.