I've worn the shoe through about a month of climbing now. I sized down from my street shoe size 43 to a 41.5 (slightly more conservative than la sportiva's recommendation of 2-3 sizes). After showering with the shoes to stretch them, the fit is what I would call "performance comfortable." I take them off between boulder problems and sport routes at the gym, but I don't have any pain (for small durations) after wearing them for a month. My feet are on the wide side, and I really like the fit of these compared with something like the Muira, which feel narrower. I ultimately chose these because I plan to use them on slabby Pennsylvania sport climbing as the weather turns again in the fall. These have been stiff enough to edge and downturned enough to stick to overhanging boulder problems. I really wanted a "do it all" shoe, and I think this fits the bill. Rubber is sticky.
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