The smart system has a double system for optimum performance in cold weather

an ergonomic compression fit for improved anatomical performance

and the selvedge denim-style

Alpinestars Flex Plus ‘Race’ leather throughout

a magnetic quick‑release chest buckle speeds entry

zx evo v2 bottom black gray Size:XL/2XL The smart system has aAlpinestars ZX Series EVO Lines layers are constructed with Lenzing FR; an innovative natural viscose fiber that affords exceptional flame resistance and protection against heat transfer. This Formula 1 specification underwear is extremely lightweight and thin, while being incredibly soft to the touch for greatly enhanced comfort when wearing a driving suit.