These are awesome. I'm pretty short and more pear-shaped with a generous booty, so I often struggle to find leggings that don't slip down throughout the day. After reading the other reviews I decided to go for a medium since I prefer a tighter fit (though normally I'd be a large/x-large, or a 14-16). It was a bit of a stretch to get them on at first but after that they slip on easily and fit like a glove. I'm quite short so I have to pull them up over my legs to prevent scrunching, but they smooth out over my legs afterwards. They do tend to slip down a tiiiiny bit sometimes but it's very gradual and nothing compared to my other tights. I haven't worn them for anything particularly exerting so far, just work/walking/yoga etc. Also the colour is gorgeous and unique, and two pockets is a huge bonus!