Proven MIPS coverage for superior open-face performance The Speedframe MIPS Helmet has premium features usually meant for much more expensive helmets. A MIPS liner, goggle compatible 3-position visor, and our 360-degree fit make the Speedframe one of the best values in an open-face mountain bike helmets. Add in the legendary aggressive Fox design DNA, and you have one of the most shred-ready mtb helmets in the market today.