I usually wear a men's size 9. I received an 8 based on previous experience at a retail store. Turns out the store only tried on much wider feet, leading me to believe they were made larger than the advertised sizes. So I returned 8 and got 9 which is perfect. So just order your normal size that you would wear if you were wearing adidas, nike, puma, new balance, vans etc and make sure someone with big/wide feet won't stretch them. I love them and have worn them for over 20 years.