Brand: G-FORCE Racing Manufacturer's Part Number: 4414XLGWH Part Type: Helmets Product Line: G-FORCE Pro Force Crew Helmets Summit Racing Part Number: GFR-4414XLGWH UPC: 845917014685 Helmet Type: Half Helmet Size: X-Large Snell-Approved: No FIA-Approved: No DOT-Approved: No ECE-Approved: No SFI-Approved: No Helmet Base Color: White Helmet Finish: Gloss Fresh Air Compatible: No Helmet Primary Color: White Helmet Graphic Style: None Helmet Shield Included: No Vented: Yes Removable Lining: Yes Circumference: 23.875 in. - 24.250 in. Hat Size: 7 5/8 - 7 3/4 Visor: Yes Helmet Liner Material: Nylon Quantity: Sold individually. G-FORCE Pro Force Crew Helmets G-FORCE Pro Force Crew helmets were designed with all of the same great technology as our Pro Force helmet line. They are constructed with a G-FORCE lightweight composite Z38 shell and G78 impact liner. The G-Flow ventilation system consists of four top vents that keep your head cool. It features multi-adjustable straps for radio headsets， and an adjustable visor system has a tinted band to help keep the sun out your eyes and make pit stops even faster.