Spark Hardboot Dual Height Wires 120 Last [Ventilation system : Rise] Vents X Large [Ventilation system : Rise] Vents above the goggle promoting air flow RISE ventilation system utilizes the Venturi effect to draw air through subframe vents above the goggle Bones All Tank 80A ATF Skate Wheels deliver unmatched durability through Bones' legendary All Terrain Formula urethane that smooths out cracks and rough surfaces without sacrificing speed The Spark Hardboot Dual Height Wires bring a game‑changing addition to hardboot splitboarding these heel wires offer two adjustable rise options—55 mm for a 12° angle and 75 mm for 18°—optimising stride comfort whether tip‑first or heel‑first on the skin track