Name: NIGHT CHARM Place of Origin: London, England Material: Nano-laminated photosensitive material (lens), Tough resin material (frame) Weight: 0.15 lbs Delivery time: Global delivery time is about 1-2 weeks Cleaning: Since the mirror surface is made of special materials, please use the special cleaning tools we provide to clean it, otherwise the glasses lens is very likely to be damaged. Q: What is the use limit of this type of glasses, why is there no size distinction? A: The frame of this glasses is made of special resin material, it is extensible, so all face sizes can be worn, you dont need to worry. Q: Where are the products manufactured, where are they shipped from, and how long is the delivery time? A: This product is produced in London, our companys headquarter is located in London, but we have branches in America, Oceania and Asia, we will ship from different warehouses according to your location, so the delivery time around the world for about 1 week.