Smooth top tread with deep channel vents water away from center for improved wet weather traction Wrap tread design on sidewall for improved cornering traction KD - 1.5mm thick composite mixture of rubber and Kevlar fiber belting increases protection from thorns and other piercing debris Standard 700x38 622 Wire Belted Bk/Blk 75 625 60 68a KD NoUPC/EAN/GTIN: 6927116100193