A lot of the reviews stated that size was smaller/narrow compared to normal shoe sizes, so, I did go a size ahead. I normally wear a size 9 mens, and ordered a 10. A bit on the small/narrow side. A bit stiff at 1st, but, after about a week they start loosening up. I walk A LOT being I can't drive, so, I was really looking for a comfortable pair of flip flops. These are ok. Ironically, the cheap pair of 8 dollar flip flops I purchased 2 years ago at Wisconsin Dell's were way more comfortable than these. But, they do the job. They are solid, so, I believe they will last a long time. I just would not recommend taking long walks in them that's all.