New tread design - Modern and aggressive look, optimized for fast rolling and best in class cornering traction New race compound - The Booster utilizes a newly developed race compound that is fast and grippy, especially on dry, loose over hard and rough and rocky terrain GCT - Features the GCT casing which wraps the tire from bead to bead with a secondary casing layer acting as a shield against punctures and sidewall slashes without the weight of conventional belting Tubeless 700x40 622 TBLS - Fold Bk/Blk 50 120 GCT NoUPC/EAN/GTIN: 047853647075