COMFORT by CONFORMAX ULTRAGEL Motorcycle Seat Gel Pad- Combo Set (Lg TR/Md RP) MADE IN THE USA. IMPORTANT NOTE: ULTRAGEL at 5/8" thickness. These are INSERTS ONLY, and are not to be used as is for top cushions (unless you provide your own cover) for your motorcycle seating area. These pads are designed to be INSTALLED underneath the surface of your seat. Reduces transmission of road impacts and bike vibrations minimizing rider-fatigue on long trips Easily trimmed to your size needs. Will not leak if cut or punctured. All ULTRAGEL motorcycle seat gel pads include 24 x 20 Smoothing Foam (1/8") Combo Set: Lg TR 18 x20x13 / Md RP 11 x 9 x 7 in.