An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability. A square profile provides a solid, consistent feel across the knobs. Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces. An excellent choice for technical, freeride terrain.Open tread design,Improved braking and traction.Specification:Conditions: Loose Over Hard, Loose, Medium, Wet,Cornering Control: 1 2 3 4,Rolling Efficiency: 1 2 3 4,TPI: 60,Bead: Foldable,Ply Construction: Single,Compound: Single,Max PSI: 65,Tech: SilkShield, eBike.TechnologySilkshield: SilkShield offers protection from bead to bead whereas Silkworm is found under the tread only. SilkShield provides an additional level of protection for sidewalls in addition to under the tread.eBike: Conforms to the European ECE-R75 certification for e-Bikes