Product Overview: La Sportiva Mutants offer great protection from rocky trails, deep lugs for mud, sticky rubber outsole that grips anything, and an upper/lacing system that locks my foot down and provides a comfortable fit. These are now my go-to shoes for anything steep, technical or slippery. These shoes are incredibly light and super comfortable, and would suit a medium to wide foot. Key Features include: Spyraltongue Technology for easy entry Integrated Fusiongate Technology Lacing Harness with High Frequency reinforcements for a fantastic fit and comfort around the ankle area. Incredible traction with FriXion XF, La Sportiva's stickiest running shoe sole compound Sublime cushioning tames the trails If you are getting ready for the UTA 22, 50 or 100 then you gotta have a pair of Mutants.