- variable sipe density - inside tread: higher sipe density for excellent traction on ice and snow. outside tread: lower sipe density for traction on wet and dry roads. - slush grooves - Evacuates slush for increased traction on slush and snow. - snow claws - Improves Deep snow traction. Increases block rigidity for better ice and wet traction. - Multi-wave sipes - Minimizes Irregular Wear for a Smooth, quiet ride. Improves braking on icy, wet and dry roads.