Low profile tread pattern with lots of biting edges rolls fast but rolls fast on hardpack and mixed terrainGum-X compound helps to optimize the balance between rolling efficiency and tractionCST - Cross Shield Technology casing provides extra pinch protection designed to prevent tread and sidewall damageStandard29x2.35622FoldBk/Blk150x2GUMX/CST/EBIKE25NoUPC/EAN/GTIN: 086699981332