I ordered these because there were literally no other leggings with a pocket available in my size -- which happens a lot.
I've worn them once, for "80's dress up day" at work. I saw a picture of myself in them later on and I swear you could see a scar on my knee through the fabric, as well as EVERYTHING else under there. They do not fit like my other pair of Medium leggings from Fabletics and while they are not "see through", the color makes EVERY curve totally visible.
Would not recommend. Approach with caution.