Cliff Keen F3 Twister Headgear - Introducing intimidation in the form of headgear - The Cliff Keen Twister F2. It's two-strap design ensures comfort and security, even in the roughest conditions. It's cool, light and protective. It lets sound come in and it lets sweat go out. So just strap it on and hold on tight. Double wide, no slide, on-the-fly strapping system adjusts securely and comfortably in seconds. Ultra-light, low profile and streamlined design. Air Vent System technology makes it remarkably cooler than other wrestling headgear. Up to an estimated 80% greater audible sound technology allows wrestlers to hear their coaches.