The M4B Uomo is an MTB shoe updated for 2017, bringing proven fiâzi:k technologies, materials, R&D, testing and manufacturing techniques to every mountain biker. M4B offers a superior blend of comfort and fit, power transfer, light weight, and trail-tough resilience for XC, All-Mountain, trail or beyond. It features a light, tough carbon reinforced sole with TPU-injected studs for perfect grip in any conditions â ensuring stiffness for ultimate power transfer. The M4Bâs comfortable fiâzi:k Cycling Insoleâs sculpted footbeds and supportive heel work with the all-new lightweight, micro-adjustable Boa L6-D closure system to ensure that every precious watt goes straight into your pedals â a bayonette mirrored system. M4Bâs combination of laser-perforated Microtex and rubber coating ensures comfort, ventilation, and fit, yet remains tough enough for any riding conditions. Soft lace guides and asymmetrical opening ensure no pressure points, while stitching, bonding and finishing are perfected with pride by true craftsmen. The M4B Uomo is all-mountain tough yet weighs just 335g (size 42.5).