MGuard Roller is manufactured for demanding conditions. The integrated Metashield® metatarsal protection dampens impact against the instep by up to 90%. The FlexEnergy® flex element absorbs the movement energy created, and over 55% of the energy is sent back to the footstep. The Sievi TractionPro® sole ensures maximum grip, and user comfort is increased with the Dual Comfort insole, the BOA® Fit System lacing mechanism and the XL last.