Flexon Kids Flexon Kids 114 Eyeglasses: This collection has changed the world of eyewear. Seeming to defy the laws of nature, Flexon Kids Flexon Kids 114 Eyeglasses frames return to shape even after bending or twisting. Crafted with a titanium base alloy, Flexon Kids Flexon Kids 114 Eyeglasses are made from flexible metal.