The Speedframe offers a range of premium features usually only found on helmets at a much higher price point. With a MIPS liner designed to absorb rotational motion and redirect forces away from your brain in the event of a fall, a 3-position goggle compatible visor and Fox's 360-degree retention system, the Speedframe is one of Fox's highest quality mountain bike jet helmets. Add to that the legendary Fox DNA design and you have one of the most popular mountain bike helmets on the market.