Fixed studs, when slipping is not an option. We have set the standard for studded footwear and now OLX® continues this for trail running, OCR, and Orienteering. Made of carbide steel, which is 6-7 times harder than normal steel, these studs are virtually impossible to wear out. For trail running, we use our \"fixed\" system which unlike our BUGrip® system, does not adjust to the surface. The benefit for trail running is that the studs are always exposed and provide grip on whatever surface they encounter. This allows us to make a thinner sole, which improves ground control and saves weight. OLX® is used exclusively in our summer trail, orienteering and OCR shoes.