Zella leggings are the best I have ever worn, there's a reason why I just bought my fifth pair. The fit is great and the length is perfect for a tall woman like me. They withstand everything and last for a long time. Overall great product, I will continue purchasing in the future!
The quality is great - thick, without feeling so and not see through at all. However, the fit is a little awkward, these are not petite friendly, they sit oddly and bunch up at the bottom. I am keeping these only because good spandex are so hard to find but I would not recommend if you are under 5'4.