Get ready for the sunshine with these beautifully designed Koolsun sunglasses. The Flex style ensures the best fit for babies and toddlers. They come with a back buckle strap you can adjust for a perfect fit and to keep the glasses in place! You can also remove the strap and they can wear the sunglasses without it.  This FLEX sunglasses are made from a strong flexible elastomer and the lenses are of unbreakable polycarbonate material. The brown lenses are certified optical class 1 and cat. 3, with 100% UV-A and UV-B protection against harmful sunlight.   You can store in their KOOL accompanying microfiber imprinted pouch, when not in use.