Made of nylon with fiberglass and microfiber mesh this mountain bike shoe combines comfort and durability for all your cycling needs it features a 2-bolt SPD style cleat and a ratchet and 2-strap Velcro closure as well as toe spikes in addition to the features listed below. Nylon/fiberglass midsole provide an incredibly stiff and efficient pedal stroke while the microfiber/mesh upper keeps your foot cool and comfortable TPU open tread design on the outsole resists abrasion sheds mud and provides excellent grip and traction in a variety of conditions Control cage arch support external molded heel cup and E.V.A. padding with Polytech supports work together to give you support for the long haul Micrometric replaceable buckle with automatic release button easily adjusts for a secure fit 3M reflective print adds visibility Threaded inserts for toe spikes