Flexi Sunnies appears to be a legitimate company that sells kid-proof flexible sunglasses for children. They offer a range of colors and designs, and their sunglasses are made from a premium grade silicone, which means they can bend and flex, making them less likely to break. They also offer UV 400 protection for children's eyes. They even offer a 14-day stress-free refund if customers aren't completely satisfied with their purchase. However, it's always a good idea to do some research and read reviews before making a purchase from any online store.