Description
F1 specification underwear, constructed using an innovative flame resistant technology developed by Alpinestars. Lenzing FR® is a special natural viscose fiber with unique thermal insulation and permanent flame resistance properties that help prevent heat stress and heat stroke. Also refereed to as "Nomex Underwear". For use in all motorsports where SFI or FIA rated safety equipment is required. Drag Racing, Circle Track Racing, Dirt Track Racing, Road Racing, Time Attack, PCA Racing, BMWCCA Racing, NASA SCCA Racing, Vintage Racing, Off Road Desert Racing, Short Course Racing, Rally Racing, Club Racing, NASCAR, IMSA, World Challenge.