I love these. I wanted light, flat, easy to put on shoes to replace my slides in colder weather. I tried several brands and these felt the most neutral and comfortable.I wear US men's 9 or 9.5 in running shoes and the Kricely 9.5s were just a hair short with my toes touching the end so I went with the next size up, a full size to 10.5. I wish there was a half size between because they're a little too roomy for serious running for me, but they are still perfect for the easy slip on casual wear and easy walking I bought them for as well as occasional bursts of jogging and running when I'm in a hurry.