Hurrithane Binding by K2. The binding that started the urethane highback movement 4 years ago. The K2 Hurrithane continues to convert park and jib riders the world over with the tweakable flex and comfort you can only get from a full urethane highback. Skate inspired technology for skate inspired grabs and slashing. CHASSIS: NEW Pro-Fusion PC. HIGHBACK: Tweakback Asym. ANKLE STRAP: Custom Caddi. Imported.