We’ve also added a micro-fiber liner to the front of the shoe to minimize stretch and maximize comfort. The Momentum’s durable rubber is unique in that it’s molded— inspired by the way we forge our carabiners—versus cut from one sheet of rubber. This is our engineered solution to optimize our shoe’s rubber and rands for weight, consistency and comfort. Built for all-day comfort on moderate routes, boulders or gym sessions, the Momentum features a soft flex midsole for sensitivity and is the perfect entry level climbing shoe.