Get the Black Diamond Momentum shoes here. Black Diamond are fairly new to the climbing shoe market. Picking the right size climbing shoe is tricky, especially when you haven't tried a certain brand before. With this in mind we headed into Innsbruck town centre to try and answer the question, how do you size Black Diamond shoes? WARNING: This test was very unscientific, the chart is a guide. If possible always try on shoes before buying. Everyone's feet are different. How To Size Black Diamond Climbing Shoes | Climbing Daily Ep.1271