Brand: Zamp Manufacturer's Part Number: H770001XL Part Type: Helmets Product Line: Zamp RZ-56 Helmets Summit Racing Part Number: ZSC-H770001XL UPC: 873895032292 Helmet Type: Full Helmet Size: X-Large Snell-Approved: Yes FIA-Approved: No DOT-Approved: No ECE-Approved: No SFI-Approved: No Snell Rating: Snell SA2020 Helmet Base Color: White Helmet Finish: Gloss Fresh Air Compatible: Yes Helmet Primary Color: White Helmet Graphic Style: None Helmet Shield Included: Yes Vented: Yes Removable Lining: No Circumference: 24.400 in. Hat Size: 7 3/4 Helmet Shield Color: Clear Visor: No Helmet Liner Material: Fire-retardant fabric Quantity: Sold individually. Zamp RZ-56 Helmets Zamp RZ-56 helmets combine the latest headgear technology with the best value on the market! This model provides minimal front venting， with the option to add a top-air accessory to run a forced air system―to stay cool and prevent fogging in extreme racing conditions. Inexpensive is redefined with this helmet， which can be compared with helmets that cost twice as much! Features include: composite fiberglass lightweight shell; minimal forward venting with scalp and exhaust vents; plush fire-retardant interior; and M6 inserts for head and neck restraints. The Z-20 Series 3mm shield has posts using 12.25 in. center tear-offs. Order the size and color you prefer.