Read this if you're buying sunglasses! I chose 60% graduated grey tint (the darkest tint available on the drop down menu) and was very disappointed with the result: completely clear when help up to the light. When I phoned to ask if there had been a mistake I was told that was normal for a 60% tint and that a sunglasses tint would normally be more like 85% (not an option on the drop down menu when selecting your sunglasses tint). In addition, I was told that 'Glasses Frames & Lenses' (GFL) have no control over the graduated tint effect and that it's possible to get a lens cut from the lighter part or the darker part. I think this information should be made available when buying sunglasses online, nevertheless a very helpful Tina agreed to remake my sunglasses with an 85% graduated tint (although I had to pay the postage) insisting they would look like a pair of sunglasses you might buy in a sunglasses shop. On receiving this second attempt I was equally disappointed with no notable difference from the first pair - a colleague at work agreed they were as good as clear when held up to a window. This time I spoke to Amanda who said she packed my sunglasses herself and felt they were sufficiently tinted - something I find hard to believe having seen them myself. However, Amanda did offer to remake my sunglasses a third time with a full 85% grey tint (again, sadly without offering to cover postage). So, finally I am happy with my sunglasses now that they have a tint, but it's still not a very dark tint so I would recommend phoning the company and requesting this darker 85% tint when you place an order. On the positive side the lenses are definitely made to prescription, and they also look well made with the anti-reflective coating and a nice chamfered edge which you don't see on a cheap pair of sunglasses. I chose 1.59 polycarbonate lens which resulted in a nice thin lens for my -2.5 distance prescription. Of course I was very happy that GFL offered to remake my sunglasses twice, but I feel this could've easily been avoided with a little more information available on the website when selecting tinted lenses... so hopefully this review will help you avoid the same issues :-)