I have ordered 3 sets of lenses and they are easy to put in, excellent quality glass, and exactly the right look. First I ordered lenses for some pilot frames that had suffered through years of flying and then years in a box. My grandson and I both have new pilot glasses now and they are favorites. Next I sent for some Serengeti frames which seemed much more difficult to match. No problem, my Serengeti glasses are fixed. Great lenses. Normal delivery is a little slow but reliable. I am very pleased with their lenses and the way they fit.