There was s problem with USPS delivering this one number off and on the wrong street. Not the Seller's problem. The Glasses were delivered about 5 days late when my neighbor on the next street walked up (Easter Sunday) and gave us all the missing packages from that week. My wonderful wife loved the pictures of the glasses and now that she has them she wears them everywhere. Construction wise these should last pretty well. We live in Arizona, it's bright and my wife loves the way they work to reduce her eyestrain from driving. Good price especially comparing these to what is available locally.