FIZIK R4 Overcurve Iridescent is a performance-optimized road cycling shoe that impresses not only with its technology but also with its eye-catching iridescent upper. These shoes are designed for cyclists who want both style and performance in one product.

Features and Technology:

Sturdy Upper with Iridescent Finish: R4 Overcurve Iridescent has an upper made of durable polyurethane-laminated material combined with comfortable mesh. This construction reduces energy loss and provides long-lasting foot support, especially where it's most needed. The iridescent finish gives the shoes a unique look that stands out on the road.

Overcurve Closure with BOA IP1:

The shoe closure is simple, reliable, and secure thanks to the micro-adjustable BOA® IP1 dial integrated into the asymmetrical Overcurve pattern. The Overcurve construction follows the ankle and tracks the natural alignment of the ankle bone. This creates an asymmetrical shape that curves over the foot from the outside to the inside, ensuring a tailored fit.

Moderately Stiff R4 Outsole:

The R4 outsole is moderately stiff, providing an excellent balance between comfort and pedal efficiency. It is structurally optimized with a 15% infusion of carbon fiber, reducing weight and increasing stiffness. The outsole also offers effective ventilation with internal channeling, assisting with temperature regulation.

Optimized Cleat Position:

The cleat is positioned slightly toward the heel compared to traditional settings. This optimizes pedal efficiency and reduces knee compression, making the shoes suitable for aggressive forward-leaning aero riding positions.

Specifications:

• Upper Material: Polyurethane-laminated material and mesh with iridescent finish
• Closure: BOA® IP1 dial with Overcurve pattern
• Outsole: R4 with carbon fiber infusion, stiffness index 15