The Alpine JB utilizes an inverse tread that offers lower rolling resistance and is smoother compared to traditional knobby tires, while grip and confidence remain inherent features with increased durablity.Features-Stronghold CasingItem Specifications-Color:Black-Defined Color:Black-Intended Use:Road-ISO Diameter:622 / road / 29"-ISO Width (mm):30mm-Labeled Size:700 x 30-Tire Bead:Folding-Tire Diameter:700c-Tire Type:Clincher-TPI:120