All-mountain tough.

Seamlessly blending comfort, fit, power transfer, low weight, and trail-tough resilience, the Fi'zi:k Men's M4B Uomo Boa Shoe is ready to handle XC, all-mountain, and trail rides with aplomb. The M4B boasts a light, yet tough carbon-reinforced sole with TPU-injected studs to ensure both reliably sticky grip and exceptionally responsive power transfer. This shoe's plush Fi’zi:k Cycling Insole’s sculpted footbeds and supportive heel work together with the micro-adjustable Boa L6-D closure system to guarantee that every crucial watt of energy is directed right into your pedals. Then, M4B’s use of laser-perforated Microtex and rubber coating brings high levels of ventilated comfort to your foot with a snug fit, while also remaining tough enough for varying conditions on the trail.

Tough-as-nails yet light, comfy MTB shoe for all conditions
Microtex and rubber bring both comfort and durability
Boa closure system locks in the exact right fit
Sculpted footbed and supportive heel enhance pedal efficiency
Injected carbon outsole with TPU studs offers grip and power

Tech Specs

Upper Material

Microtex laser-perforated, rubber coating

Closure

Boa L6-D

Footbed

fi'zi:k Cycling

Sole

injected carbon, TPU co-injected STUDS

Recommended Use

mountain biking

Manufacturer Warranty

2 years

Size

Fi'zi:k

Footwear
EU	UK	US MEN	US WOMEN	CM
36	3 1/4	4.25	5.75	23
36.5	3 3/4	4.75	6.25	23.35
37	4 1/4	5.25	6.75	23.7
37.5	4 1/2	5.5	7	24
38	5	6	7.5	24.35
38.5	5 1/4	6.25	7.75	24.7
39	5 3/4	6.75	8.25	25
39.5	6	7	8.5	25.35
40	6 1/2	7.5	9	25.7
40.5	7	8	9.5	26
41	7.25	8.25	9.75	26.35
41.5	7.75	8.75	10.25	26.7
42	8	9	10.5	27
42.5	8.5	9.5	11	27.35
43	8.75	9.75	11.25	27.7
43.5	9.25	10.25		28
44	9.75	10.75		28.35
44.5	10	11		28.7
45	10.5	11.5		29
45.5	10.75	11.75		29.35
46	11.25	12.5		30
47	12	13		30.35
48	12.75	13.75		31