Alfie Pet by Petoga Couture - Larry Sun Glasses for Dogs and Cats The frame measures 4.25" long and 1.25" wide. With the adjustable head and chin strap which fits 10-14" head girth. Deep lens cup, padded and flexible rubber frame. Fashionable eye protection for your dog. Fun, yet functional design. Protect dogs eye from wind, water, debris and other elements. Try one on your doggie today!