Spitfire - Formula 4 Conical 52mm 99a bones Formula Four Urethane - Unmatched

Formula Four Urethane - Unmatched abrasion resistance for fewer flat spots

Durable fold-over cuff design keeps warmth in and the edge neatly in place through daily activities

and athleisure ensembles

versatile silhouette that layers beneath jackets or over hoodies without adding bulk or stiffness

plus helps keep the fit snug during active days

Spitfire - Formula 4 Conical 52mm 99a bones Formula Four Urethane - UnmatchedKey Features Formula Four Urethane Unmatched abrasion resistance for fewer flat spots. More controllable grip. Lasting speed no matter the terrain. Smooth anti slick slide and a longer lasting size and shape. Wide profile More traction and stability at high speed so you'll be less likely to slip out of your line.