SA2020 Impact Air Draft is discontinued and out of stock in all sizes but 2XL and we don't have a solid ETA. To get on the wait list, email us or give us a call at 562-427-8177. The Impact Offset 20 is a unique design offering the utmost in comfort, large field of vision and roof clearance in a top air helmet. This is the raw, unwired version of the helmet. For the wired version, click here. SNELL SA 2020 Wide, low eye port for better field of view and great view of the dash. Constructed of a Carbon-Kevlar tri weave composite. Offset 20 Air Inlet for additional overhead clearance of the roof of the vehicle. Connect your RaceAir hose and fresh air is pumped into three individual air channels towards the shield reducing fog. Optional Upgrade to Noise attenuating Ear Cups. All SA 2020 helmets have the 6mm back plate installed for easy Head and Neck Restraint hardware installation. Size Chart As with all personal safety devices, helmet fit is vitally important and can increase the risk of injury if not properly fit. Carefully measure the head approximately one inch above the eyebrows across a point at the back of the head that gives the largest measurement. Please remember: Helmets will "break in" with use. It is important that the helmet fits as tight as one can comfortably withstand to wear. Please see the charts below for helmet fitting. If you do not know your hat size, please take a cloth tape measure and measure around the circumference of your head, just above your brow line. Size Centimeter Hat Size Inches XS 53-54 6 1/2 - 6 7/8 20 5/8 - 21 S 55-56 6 7/8 - 7 21 5/8 - 22 M 57-58 7 1/8 - 7 1/4 22 1/2 - 22 3/4 L 59-60 7 3/8 - 7 1/2 23 1/4 - 25 5/8 XL 61-62 7 5/8 - 7 3/4 24 - 24 1/2
