Comfort: Designed in Silicon Valley, ThinOptics Readers are feather-light and engineered to grip with gentle pressure. They can be moved up or down your nose for optimal fit and comfort Strength: Every ThinOptics Reader is made of shatterproof, thermo-injection molded, optical-grade polycarbonate. The bridge is made from a shape-memory metal called Nitinol, which is 10x more elastic than spring steel and encased in medical-grade silicone tubing Quality: We use the same lens material regularly found in high-end prescription glasses. The lenses are made by one of the most advanced optical lens manufacturers in the world and the durable case is made to protect your glasses from damage Fit: ThinOptics Readers have been designed to fit the vast majority of noses. They can be positioned higher up or down the nose for a comfortable fit. We designed ThinOptics to stay on securely, even as you move side to side, or look down. If fit is a problem, we offer a 30-day, money-back-fit guarantee Convenience: ThinOptics Universal Pod includes both the ThinOptics Readers & the Universal Pod case which feature a non-residue adhesive to stick onto your phone/case or any other hard & flat surface to be Always WIth You