They do not ride up
"I am 51 with thicker muscular thighs. I’ve been experiencing chafing a long runs with other shorts. I tried these shorts. They are incredible. Absolutely no chafing. They do not write up at all. They do not have rubber on the inner rims so I do not know how they stay in place but they do. I don’t think I would run my marathons in anything but these going forward."