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

Soft-knit design enhances comfort and provides a snug feel against the ears for all-day wear year-round

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.