I am a size 11 street shoe and size 10 climbing shoe (US sizes, usually, sometimes 9.5) and I got size 43 which correlates to size 10 in US sizes. They fit like a glove!!! absolutely no dead space and actually not that uncomfortable for an aggressive (relative to my old shoes) fitting shoe. Although I could see how may start to hurt after wearing for an hour or two, but hey, they're climbing shoes they're not supposed to be very comfy! I am going out to the crag tomorrow to really put them to the test but I just had a quick session on the home-wall wearing my new Apria's because I couldn't resist and they felt AMAZING! Rubber is so sticky and I can feel my feet so much better than my old pair of shoes! Edging on my 45 degree wall has never been easier its like the foot holds magically got bigger haha, definitely recommend these for someone look to get into some more aggressive climbing shoes as these are my first aggressive (relatively) pair. The shoe also seems to be well designed with longevity in mind which is nice, very happy with my purchase overall. :)

a little tight, but I love these. I love to climb and with these shoes I loved it even more. they just grip on the wall. I would just go up in a size. defiantly worth it.

These are some really good shoes! I am just starting climbing but these ones are comfortable enough that my feet don’t hate me. I love the simple one Velcro that actually keeps them tight enough, yet easy to put on.

These shoes are downright awesome. Scarpa's quality and detail definitely seems to hit a notch above other brands I've tried like Black Diamond and Evolv. These shoes are a perfect intermediate shoe with just the right amount of downturn to transition into for the first time. I'm still learning, but the more "beginner" centered shoes I've tried have quickly become less useful in my experience. The Arpias are the perfect step up and still provide enough comfort to get through several hours at the gym. I have yet to try anything outside, but I'm certain these would hold up well.

Definitely go a size UP from your regular shoe size. Even kardi B would dig these kicks. Sexy Italian rubber.
I wear 10 in ASICS kayano, 10.5 in Garmont , the scarpa 43.5 10.1/3 where tight as hell and oncomfotable as hell. Much nicer rubber and build quality than the black diamonds I have, obviously more care in the design and build, and rubber was sticker. The thin arch and heal allows for good flex and movement. Definitely choose these over the black diamonds you have been looking at - they are just a big brand pumping out big brand marketing and no longer the best products., sadly a clear difference between brands and build locations. The lacing system is super simple and the heal fits nice. These are a nice step up from a entry level shoe and will blow your mind if you have just been running the stinked up horrid hire shoes from the gym. Well worth the money. Thanks. If you can try them on, or order a few pairs as fit is tight. Sadly returns is a costly pain in the backside, would not even consider it if your lived internationally. Cost $69 CAD in import duty so don’t even consider shipping international unless your a legit millionaire not a wantabee with a maxed out card. These kicks - Made in Italy with care, your definitely going to pull chicks when you pull these bad boys on. Nb. my black diamonds stink like a porta potty in Alberta, like, way way worse than my other scarpa and 5.10, so don’t go near them unless you need to keep bears/raccoons out of your car.