With an upper fabric that consists entirely of Black Diamond's Engineered Knit Technology, the men's Momentum provides stretch where you need it, support where it matters and all-around exceptional breathability. They've also added a micro-fibre liner to the front of the shoe to minimise stretch and maximize comfort. The Momentum's durable rubber is unique in that it's moulded – inspired by the way Black Diamond forge their carabiners – versus cut from one sheet of rubber. This is their engineered solution to optimise the 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.