The Fizik M6B MTB Shoe. The M6B is made from strong but breathable Microtex and nylon mesh, together with a rubber outsole and carbon-reinforced nylon midsole.  It has a quick, easy and flexible Boa IP1 closure system with welded Microtex straps.  The M6B is light, stiff and tough. Its uses are many: MTBing, CX or even commuting to work.  This is a comfortable and durable “do-anything” shoe that’s lightweight with a carbon-reinforced nylon midsole stiff enough for most.   Fizik M6B MTB Shoe Features Rubber Outsole with high friction rubber treads for extra grip Carbon-reinforced nylon midsole Upper made from Laser-perforated Microtex and Nylon mesh (Microtex as used on fi’zi:k saddle covers: lighter than leather, very durable, good in wet conditions, breathable and cleans up well). BOA IP1 closure system (bi-modal: tighten and complete release) Neutral fit to accommodate the majority of foot shapes Volume: low/medium/high Fi’zi:k Cycling Insole Weight: 385g (size 42.5, without insole)