Built for unparalleled comfort during all day cragging and gym sessions, the Momentum Lace is a shoe that combines innovative technology with a classic, flat-last design. The result is an entry-level shoe that excels in performance. With an upper fabric that consists entirely of Black Diamonds Engineered Knit Technology, the Momentum Lace provides stretch where you need it, support where it matters and all around exceptional breathability. Theyve also added a micro-fiber liner to the front of the shoe to minimize stretch and maximize comfort. The Momentums durable rubber is unique in that its moldedinspired by the way they forge their carabinersversus cut from one sheet of rubber. This is their engineered solution to optimize our shoes rubber and rands for durability and comfort. Designed for all-day comfort on moderate routes, boulders or gym sessions, the Momentum features a soft-flex midsole for sensitivity and lace-up adjustability, making it the perfect entry level climbing shoe. These shoes run small our OGExperts recommend up to one-half size above your street size. If you have any questions about sizing, please contact our OGExperts via LiveChat or call 888-547-4327. WARNING: This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov