Updated Feb 4, 2026
Backcountry Gearhead® team
What are the differences between the Evolv Defy and Black Diamond Momentum in terms of fit?
A fit-first guide to choosing the right comfort level, toe shape, and sizing approach for long sessions—without the guesswork.
“Super comfortable… perfect for long sessions.”
Fit note from our Gearhead® experts on the Defy’s comfort-focused shape.
How tight should the Evolv Defy feel when you first try it on?
Is the Black Diamond Momentum meant to be an aggressive, tight fit?
Which one is better if your heel slips in most climbing shoes?
What fit should you choose for long indoor sessions?
How can you tell if the toe box fit is right without climbing?
Should you size down for better performance if you’re new to climbing?