Skull Dura X SpinThe ski race helmet features our new fit technology, Race Lock. The innovative system ensures ski racers can lock the helmet tightly to their head to minimise vibrations at the very high speeds reached in elite racing. Developed so that the adjustment system does not interfere with the race position, Race Lock turnwheel technology sits perfectly in line with the helmet shell and can be adjusted with gloves on so you can fine tune your fit in the start