Doggles(R) ILS ( Interchangeable Lens System) Protective Dog Chrome Eye Glasses Doggles(R) ILS Protective Dog Eyeglasses are the first and only protective eyewear specifically designed just for dogs! Doggles feature a interchangeable lens system (ILS) that provides your dog with 100% UV protection and protects your dog's eyes from debris during road travel. Not to mention that they make him look absolutely adorable while protecting his peepers! Features: Polycarbonate (shatterproof), anti-fog, 100% UV protection lenses Interchangeable lens system (ILS) 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 Available in 5 sizes to fit most dogs Item Specifications: Color: Chrome Sizing: *Frame is the measurement from one corner of the frame to the other (corner of eye to corner of eye across the face). Please keep in mind that breeds vary by size, the breeds above are examples, you should go by the size and weight of your dog. The weight and frame measurement are the most important measurements.