They were recommended on MN recently so I've bought a couple of pairs to try them. They are lovely around the waist, but are more like skinny fit yoga pants than regular leggings as they have quite a bit of excess fabric, especially around my upper legs and hips. Usually leggings are close fitting, aren't they? Like really thick tights.
I am very apple-shaped, so my waist is disproportionately big compared to my hips, so perhaps they have been designed more with pear or hourglass shapes in mind.