I love how comfortable these are, however i feel like I have the same problem with these that I have with most other leggings. They fit prefect in the leg/butt area, and actually has minimal bunching at the ankle for me (i'm pretty short so this is great). But I feel like in the waist it is about a half size too big, which I think is why I find them inching down as I lift in the gym. My butt wouldn't fit in a medium, but that's what I feel like my waist needs. Love that they're a black pair of leggings that are squat proof!!!!
Jasmine recommended this style