Works on any Helmets / Size: 12.1 inch*Length (Helmet not Included, we do not sell helmet) Very good adhesion and stability,hold up to 200 mph Silicone material,Safe and environmentally friendly, please feel free to use Customised cut and stick with different colors 3T-SISTER Helmet Mohawk Wig Adhesive Mohawk for Motorcycle Bicycle Ski Snowboard Helmet Hair Skinhead Costumes Cosplay Wig Silicone Hawk(Helmet not Included)