I bought these after a recommendation from a friend when she said they are dupe worthy of lululemon (I am a big fan of the wunder unders).
First off there were a few lose strings however I tugged on them slightly and it did not cause any runs in the material. I believe the ends were knotted properly but the leftover strings were trimmed sloppily making it look like there were lose stitches when there was not.
Material: the material is very compatible to lululemon wunder under. It is a little thicker if I really had to be picky but I LIKE IT! Why? it hides that extra but of cellulite that those super silky leggings love to highlight like saran wrap (kidding of course).
I wore these during a yoga practice and I gotta say the movement and comfort was very compatible to expensive brands.
The black ones pass the squat test. If you are concerned with them being squat test approved then you might want to stick with the darker more opaque colors.
These are true to fit. I a. 5'10 around 160lbs in this pic and went with the long ones and they fit perfect to the top of my ankle (normally all leggings look like crops on me so the 28" were perfect as advertised). Oh and no camel toe is visible in these