Spitfire 99a Formula 4 OG Classics 58mm Skateboard Wheels Beanie and zippered vents to aerate

and zippered vents to aerate hot hikes

Perforated fabric provides protection from the elements

DRYRIDE two-layer fabric with fully-taped seams provides a barrier against snow and other moisture

critically taped seams

Spitfire 99a Formula 4 OG Classics 58mm Skateboard Wheels Beanie and zippered vents to aerate99a Durometer More speed and control on all surfaces. Unmatched flatspot resistance. Smooth, anti stick ride. High rebound compound. Formula Four Urethane Formula Four urethane is unlike any other. Both in the streets and under high speed stress tests in Spitfire's lab, Formula Four wheels retained more material, coned less and kept their original shapes and sizes longer than any other wheel. OG Classic Shape Spitfires original cut away wheel shape.