They hurt my toes badly on the first use (a weekend at the country house). Honestly, I didn’t expect that from this particular brand, or in this price range. I’ll try them again, of course, during the summer, in case they’ve “broken in” by the second use. In the meantime, just in case, I went ahead and bought a new pair of slides from another company. Note: I got them in size 43, but 42 would have been just fine too.