These are high-waisted, generously covering the navel, and they are also pretty stretchy. And they seem to run large. I'm normally a size small in leggings, and in jeans I'm a 6 (or 28-29, and curvy).

I ordered these along with Hue's "Skinny Jeanz" denim leggings, which are a darker wash with no polyester. For those, I needed to size up to a medium because the small was skin-tight. On the other hand, these leggings are very roomy in size small. Given how legging stretch out after awhile, I think going down to an XS makes sense. Order down a size for these unless you like a looser fit for your leggings and a super-high waist.

The fabric looks convincingly like denim. I could live without the stitching on the pockets. The legs seem long (I'm 5'4"), but then these leggings are big overall. The rivets on the front and back faux-pockets are a nice touch, but with the waistband up beyond your navel, the pockets are high, too, so no one is likely to spot them but you!