OUTSOLE: Carbon fiber filled Nylon for maximum stiffness. Channels molded into the outsole provide additional ventilation. Polytech heel pad is abrasion-resistant and offers excellent grip in wet conditions for safe walking. INSOLE: The EVA lined, perforated, and anatomically thermoformed insole is removable. HEEL: External molded heel cup for firm heel retention. 3M reflective print enhances visibility. UPPER: Made of comfortable and breathable micro fiber materials. Several mesh inserts for more ventilation. Medially located "control cage" reinforces arch support. Integral tongue with under-lapping flap. CLOSURE: Multiple-step micrometric replaceable buckle with automatic release button. Aluminum mechanics. Simple adjustment to perfect fit. Swing-out opening removes allows for easy cleaning of debris. The Polytech supports are specifically designed to distribute pressure through shock-absorbing EVA which prevents hot-spots on the foot. PEDALS: Compatible with LOOK and TIME pedal systems.