Gloryfy Sunglasses are totally unbreakable! Each built-in part of Gloryfy sunglasses are made of a special plastic. Sportsmen and women set high standards for themselves. They need to perform at their personal best, even if only for a short time, and they subject their bodies to extraordinary conditions. In many sports, the human eye is exposed to extreme situations. They have to respond and react in fractions of a second. If you need to protect your eyes from external influences like draughts, dirt, flying particles or even balls and the like, you really have to pay attention when choosing your sports glasses. Poorer quality glasses can even break in certain circumstances (the frame or the lens), causing permanent damage to your eyes. All gloryfy lenses have prismatic correction. Prismatic correction is necessary because of the distortion created by the curvature of the lens. gloryfy lenses have the highest quality rating, because their prismatic correction is fine-tuned to the high-end material gloryfy I-Flex - featuring 100% UVA/UVB protection up to 400 nm.