Spitfire - Formula 4 Conical 52mm 99a bones and athleisure ensembles

and athleisure ensembles

Formula Four Urethane - Unmatched abrasion resistance for fewer flat spots

Construction: 7-layer

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

supporting a comfortable fit from morning until evening

Spitfire - Formula 4 Conical 52mm 99a bones and athleisure ensemblesKey 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.