I looked around extensively for yoga shorts, and these came up all over the place - top 10 lists, Reddit comments, etc. They definitely live up to the hype. They seem super well-made, the liner is very comfortable, and they're perfect for yoga - they're not indecently short even when I'm fully inverted, they're never a limiting factor for flexibility, and they're super lightweight. Couldn't be happier with them.
I'm 5'9" 170lb, 34" waist with pretty muscular thighs, and a Large fits me perfectly. Definitely agree with the size guide suggesting sizing up if you have larger thighs.