{"product_id":"sph-3c-vtec-form-fit-liner-nos","title":"SPH-3C Vtec Form Fit Liner - NOS","description":"\u003cp\u003eThese are new old stock (NOS), still in the box and in the inner plastic wrap. Only available in Extra Large currently. \u003c\/p\u003e\n\u003cp\u003eThe VTEC (Vented Thermoplastic Energy-Absorbing Cushion) custom-fit system used an expanding\u003cbr\u003eurethane foam matrix poured into a shell composed of fiberglass with a leather covering that came in contact\u003cbr\u003ewith the aviator’s head—was utilized in the SPH-3C.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eWhile the standard, earlier variant of the SPH-3 utilized a traditional web sling suspension harness\u003cbr\u003esetup, the custom-molded VTEC liner was used in the SPH-3B and SPH-3C variants as a specialized fit upgrade\u003cbr\u003efor US Navy crewmembers during the 1980s.\u003c\/p\u003e","brand":"Steve Norris","offers":[{"title":"Default Title","offer_id":60090408304926,"sku":null,"price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1082\/7422\/1342\/files\/SPH-3C-Vtec-Form-Fit-Liner-NOS.png?v=1790776575","url":"https:\/\/precisionflighthelmets.com\/products\/sph-3c-vtec-form-fit-liner-nos","provider":"Precision Flight Helmets","version":"1.0","type":"link"}