650B

The ‘turbo’ of spike tires. With 361 spikes it bites firmly into icy roads. The tungsten carbide core of each spike is clad in weight-saving aluminum. The scales stop at 695 g, yet the tire remains agile and sporty. - LiteSkin: The lightest option. LiteSkin MTB tires forego SnakeSkin, but still have high pressure resistant tire beads. If you don't mind the extra effort, these tires can also be converted to Tubeless by using a liquid sealant. - Winter compound - Folding bead