They do stretch, but a comfortable shoe overall.
I've been bouldering indoors with these shoes almost every day for 2 weeks now. I am usually a 7.5 to 8 in women's and ordered both 7&8 and the 7's were tiny and the 8s were also really snug I almost considered a bigger size. Initially with the 8's my toes were curled at the top of the shoe. Now they have certainly stretched even though the box claims they won't. Maybe the shoes are a little looser than I would like now, I have some extra room behind my heel and can wiggle my toes a bit but overall it is a very comfortable shoe that I can get a good grip with. I didn't get any blisters wearing these shoes. I have narrow feet and high arches and the velcro straps really help get the shoe on just right. It's great having a smaller toe to wedge into spaces and I have been using my feet a lot more with climbing now!
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