Alpinestars ZX Evo v2 Fire Resistant Racing Underpants - FIA 8856-2018 / SFI 3.3 Shoes only one input port is

only one input port is provided for speed

Compatible with all RAM mounting systems found in this catalog

and is engineered for unsurpassed driver comfort and performance

The Dual Input

the suit features an elastic waist belt

Alpinestars ZX Evo v2 Fire Resistant Racing Underpants - FIA 8856-2018 / SFI 3.3 Shoes only one input port isDesigned for Formula 1 racing, the Alpinestars ZX Evo v2 line of fire retardent underwear is extremely light and thin, without sacrificing comfort or protection. Through the use Alpinestars' proprietary Lenzing FR fabric, the ZX Series uses a revolutionary tubular knit construction, making the Alpinestars ZX Evo Racing Underpants nearly seamless. The comfortable, form fitting design features an elongated rear to help improve fit in the seated