Spitfire - Formula 4 Conical 52mm 99a bones Soft-knit design enhances comfort and

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

plus helps keep the fit snug during active days

Side-seam hand pockets with jersey lining provide a soft feel against your hands

Classic black finish with Diamond Vision styling makes it easy to mix with any outerwear

and athleisure ensembles

Spitfire - Formula 4 Conical 52mm 99a bones Soft-knit design enhances comfort andKey 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.