Spitfire Formula Four 99D Classic Swirl Skateboard Wheels - Black/Orange clothing a 70% bio-based PU that

a 70% bio-based PU that offers comparable performance to PopCush™ for skateboarding

Fit system: BOA® Fit System with H4 Coiler disc

80g Insulation

& wicking away moisture to keep your hands warm even on the coldest days

Higher front rise

Spitfire Formula Four 99D Classic Swirl Skateboard Wheels - Black/Orange clothing a 70% bio-based PU thatSpitfire F4 wheel are designed and manufactured with the quality high performance, Formula Four urethane. Formula Four Urethane lasts longer, withstands more abuse and performs superior to all other wheels. Designed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another. Manufactured using a 100% pure urethane compound, Formula Four wheels out performed and resisted flat spots