Fizik m6b mtb spd shoesthe fizik m6b mtb shoes are made from strong but breathable microtex and nylon mesh together with a rubber outsole and carbon reinforced nylon midsole the quick easy and flexible boa dials and welded microtex straps keep your feet well secured while the fizik cycling insole keeps them comfortable on long rides features material reinforced microtexnylon mesh outsole rubber outsolecarbon reinforced midsole closure system boa l5 bridgewelded microtex straps insol