Panaracer GravelKing SK Plus Tire - 700 x 28, Clincher, Folding, Black/Brown, ProTite ProtectionGravelKing SK Plus has a semi knobby tread pattern with a super tough puncture belt for aggressive Gravel roads. GravelKing SK Plus has side reinforcement with Protite and bead to bead nylon puncture belt, resulting in a 4ply, super tough casing. Product Specifics Flat Protection: Tread and Sidewall Color: Black Brown Defined Color: Black Defined Color: Brown ISO Width (mm): 28 ISO Diameter: 622 Road 29" Tire Intended Use: Gravel Tire Diameter: 700c