I was really exited to finally try these sandals and was a little concerned with the sizing but went ahead and ordered my normal size 41. I always am a 41 and my feet are on the wider side so Euro 41 is perfect for me. These only came in narrow so I thought they'd be too narrow but they're ok for my wide feet. They could be a little wider but I don't mind it. I like a slide and if you're not used to these style of sandals you may like how they do feel like they'd slip off your foot. They're a bit noisy-lots lots of flipping and flopping sounds when you walk nut that doesn't really bother me. I've been wearing them for about 2 weeks and I didn't need any breaking in period. I live in the city so do a lot of walking and these have been great for my wide flat feet!