I was sent the 20 Denier in a bigger size, and they were really dark, and not anyway sheer. Something I don't mind, but if you're a similar size to me, you might want to bare that in mind, if you're ordering! Again the tight's were extremely comfortable, and you can feel the quality in them! The Big Tights Company do the biggest range of tights, I've ever seen which is fantastic. Laura mentioned to me when we were emailing, that she sources her tights in Italy, and strives to get them bigger in the thighs! I've lost count of how many tights I've bought where the the thighs are on the small side, and it makes them really uncomfortable to wear! It was an absolute pleasure dealing with the company, and I will definitely be purchasing them, when I need some new tights. I would just always stick to the smallest size. If you're between sizes as well, I would stick to the smaller size as they do have a nice good stretch! However if you do want to test them out, all you need to do is pay £1!