I can say that even though I measured properly, they still seemed too large and would often move throughout the day. As they did prevent chafing, this would have been fine, if it were not for the contact dermatitis that I developed from wearing them. A ring of a rash all the way around my thighs, and worse on the insides of my thigs. I had already worn these, so I didn't return them. I did return the second pair I had bought at the same time. I wish I'd never seen them, the rash lasted for a week!