The Fizik R4 Overcurve Iridescent is a road bike shoe for men which is both versatile and suitable for a wide range of cyclists. This Iridescent model looks great and flashy. The Overcurve shoe construction has a staggered collar that wraps around the ankle, tracing the alignment of the two bone protrusions: the lateral and medial ankle nodes. This results in an asymmetrical construction which ergonomically conforms to the foot’s anatomy. The BOA IP1-B locking system allows the fit to be adjusted quickly and easily by a simple turn of the knob. This locking system can also be used easily and responsibly while cycling. Sole and material This road bike shoe features the new R4 outsole, which is characterized by a medium stiffness. This outsole is reinforced with carbon, creating an ideal balance between comfort and pedalling efficiency. However, the power transmission of the R4 outsole is not as good as that of a full carbon outsole. The upper is made of a mesh material laminated with PU plastic. This improves ventilation, resulting in a comfortable foot temperature. So, are you looking for an eye-catching road bike shoe with a perfect balance between comfort and performance? Then the Fizik R4 Overcurve Iridescent is the ideal choice for you.