When Tenaya conceived the new Mastia, they wanted to create an aggressively curved shoe that delivered maximum power for standing on tiny holds, but also one which provided unrivalled responsiveness in all situations.
At the start of its life, the Mastia has a good amount of stiffness and a sharp edge, but once they're worn in, they come into their own on more soft and sensitive rock types.
Watch the video: https://www.ukhillwalking.com/videos/play.php?i=5337