With an upper fabric that consists entirely of the Engineered Knit technology, the Momentum Lace provides a stretch where you need it, support where it matters and all around exceptional breathability. Black Diamond also added a microfibre liner to the front of the shoe to minimize the stretch and maximize comfort. The Momentum Lace durable rubber is unique in that it’s moulded versus cut from one sheet of rubber. This is the engineered solution to optimize their shoe’s rubber and rands for durability and comfort. Designed for all-day comfort on moderate routes, boulders or gym sessions, the Momentum Lace features a soft-flex midsole for sensitivity and lace-up adjustability, making it the perfect entry-level climbing shoes.