{"product_id":"alpinestars-zx-v4-nomex-socks","title":"Alpinestars ZX v4 Nomex Socks","description":"\u003cp\u003eAlpinestars ZX v4 Nomex Socks are fire-rated base layer socks built for kart racers who need reliable protection during 4 cycle racing. They suit drivers looking for compression support and comfort over long sessions in the seat.\u003c\/p\u003e\n\u003ch2\u003eWhat you get\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNomex construction from the ZX base layer series\u003c\/li\u003e\n\u003cli\u003eGradual compression design that wraps the foot, ankle, and calf\u003c\/li\u003e\n\u003cli\u003eElastane fiber for stretch and freedom of movement\u003c\/li\u003e\n\u003cli\u003eSeamless build that reduces pressure points\u003c\/li\u003e\n\u003cli\u003eFIA 8856-2018 and latest SFI homologation\u003c\/li\u003e\n\u003cli\u003eLength that reaches just below the knee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFit and use\u003c\/h2\u003e\n\u003cp\u003eThe gradual compression wraps muscles, tendons, and ligaments in the foot, ankle, and calf. This design aids overall circulation and blood flow to the legs while helping combat fatigue during extended time on track. The socks remain lightweight and soft to the touch thanks to the elastane fiber that supports natural movement without restriction.\u003c\/p\u003e\n\u003cp\u003eSeamless construction and reduced pressure points make these socks suitable for long stints in the race car. The below-knee length provides maximum coverage under racing gear, and the fire-rated Nomex material maintains protection without adding bulk or discomfort.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these socks certified for racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, they meet FIA 8856-2018 and the current SFI standard for fire protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long are the socks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThey fit to just below the knee for full coverage under racing gear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the ZX v4 different from other Alpinestars socks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ZX v4 adds a compression wrap around the lower leg muscles while keeping the same Nomex fire rating.\u003c\/p\u003e\n\u003cp\u003eDrivers who prefer flat seams may also consider the \u003ca href=\"\/products\/alpinestars-race-v4-nomex-socks\"\u003eAlpinestars Race v4 Nomex Socks\u003c\/a\u003e, which uses a different seam layout for the same FIA protection.\u003c\/p\u003e\u003ch2\u003eSizing\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/9242\/8763\/files\/Alpinestars-Underlayer-Sock-Size-Chart-CMS.png\" alt=\"Sizing chart\"\u003e\u003c\/p\u003e","brand":"Competition Motorsport","offers":[{"title":"Black \/ Small","offer_id":54494445338942,"sku":"4704323-10-S","price":76.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ Medium","offer_id":54494445371710,"sku":"4704323-10-M","price":76.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large","offer_id":54494445404478,"sku":"4704323-10-L","price":76.95,"currency_code":"USD","in_stock":true},{"title":"Black \/ Extra Large","offer_id":54494445437246,"sku":"4704323-10-XL","price":76.95,"currency_code":"USD","in_stock":true},{"title":"White \/ Small","offer_id":54494445470014,"sku":"4704323-20-S","price":76.95,"currency_code":"USD","in_stock":true},{"title":"White \/ Medium","offer_id":54494445502782,"sku":"4704323-20-M","price":76.95,"currency_code":"USD","in_stock":true},{"title":"White \/ Large","offer_id":54494445535550,"sku":"4704323-20-L","price":76.95,"currency_code":"USD","in_stock":true},{"title":"White \/ Extra Large","offer_id":54494445568318,"sku":"4704323-20-XL","price":76.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/alpinestars-zx-v4-nomex-socks-white.jpg?v=1790144589","url":"https:\/\/swiftkarting.com\/products\/alpinestars-zx-v4-nomex-socks","provider":"Swift Karting","version":"1.0","type":"link"}