SUNVP Ski Helmet Snowboard Skiing Protect Helmet Warmest Ultralight Winter Snow Sports Helmet with Removable Earmuffs and Lining Racing Safety Protection for Skiing Skateboard Snowmobile Thick velvet lining - higher than ordinary materials warm 3 times Top impact resistant material - crashworthiness is 5 times the ordinary helmet ABS material molding technology, quality upscale and lightweight, so you skiing zero burden Size: L (22.8 --- 24.4 in), weight: 1.17 lbs. There are size adjustment button, you can easily adjust the size to suit your head circumference on the product. Material: PC + import EPS ,integrally molded ,lightweight