16 years of experience has made our Doggles ILS (Interchangeable Lens System) the very best in pet eyewear. For true eye protection or fashion, your pet deserves the very best. Doggles offer 100% UV protection, shatter-proof lenses, and anti-fog treatment on the inside of the lenses. Lenses on the ILS style are interchangeable and replaceable. This style is suited to all dog head shapes and sizes.