Update: August 2019- Seller contacted me concerning the delamination and sent a replacement pair. Did not have to return the original pair. Replacement pair arrived quickly. Upgraded from 3 to 4 stars. Although I expect the second pair to also delaminate, given the price paid for these sunglasses and the excellent response of the seller, I can comfortably upgrade to 4 stars.Original review: After a few weeks of use, the lens have begun to delaminate around the outer edges. See photo; left lens in particular. The area of delamination has been slowly growing since it was noticed. I hope it does not extend further to the center of the lens and obscure vision. Sunglasses were not dropped or mistreated in any way to cause this issue.Still gave the product 3 stars because the frames are very impressive. Solid and sturdy. Spring temples and nose pads do not feel flimsy in any way. In fact, the frame feels more sturdy than expensive designer sunglasses. I got the gun metal coloured frames and they look very good.So long as the delamination does not extend further towards the center of the lens, I will continue to wear them. The delamination is not very noticeable from the outside.