he M5 Boa represents Fizik's second generation of shoes in that it replaces its predecessor's ratcheting buckle and hook-and-loop straps with a Boa wire enclosure, signaling that Fizik is ready to add the top-shoes trophy to its impressive list of saddle palmares.
As with the ratcheting buckle version, the M5 Boa features uppers comprising Microtex synthetic leather, mesh, and anti-scratch genuine leather. Fizik places the latter around the toe box and heel cup in order to resist abrasion while traversing talus slopes on foot. The lightweight mesh fills the voids between the leather sections for a heightened sense of cooling ventilation. And at the interior, the soft Microtex liner provides a lasting comfort over bone-rattling trails in balmy conditions.
The Fizik Superlight insole is the same model used in the M5's road counterpart, the R5 Uomo. And while it's not custom moldable like with the line-topping M1's 3D-Flex insole, it does help to absorb trail vibration and support your arch to alleviate metatarsal hot spots. A complement of aggressive lugs affords positive traction on those scree-scrambling moments when the bike has to be shouldered. The stiff, carbon-reinforced nylon outsole ensures that no pedal energy is lost to flex during those moments when you're testing whether or not that rock chute is actually climbable.
Upper Material: [toe and heel] leather, [body] mesh
Sole: carbon-reinforced nylon
Cleat Compatibility: 2-hole mountain
Claimed Weight: [size 42, single] 360 g
Recommended Use: mountain bike