Diamondback Men's Overdrive Clipless Mountain Cycling Shoe Features a durable PU leather & breathable mesh upper with a 3-strap closure for a secure and comfortable fit The reinforced toe cap and heel cup will stand up to all the abuse the trail has to offer The SPD compatible outsole is a nylon/fiberglass composite which provides great pedaling efficiency & durability TPU treads provide improved walkability Washable perforated EVA insole and soft spandex lining improves foot comfort