Doggles Interchangeable Lens System (ILS) is protective eyewear designed just for dogs. These sunglasses feature extra wide nose bridges, deep lens cups, padded and flexible rubber frames and soft elastic adjustable head and chin straps for your dog. They give 100% UV protection and are anti-fog and shatterproof. Doggles ILS (Interchangeable Lens System) is very best in pet eyewear Polycarbonate (shatterproof), anti-fog, 100% UV protection lenses Extremely flexible rubber frame Elastic adjustable straps - head and chin Foam lines frame for extra comfort Extra deep lens cup keeps the lenses away from the eyes Patented Vet recommended Made in U.S.A