Material: The lenses are made of high quality AC resin, spectacles frame made of EVA+PC material, durable, lightweight, comfortable, fit for small dogs as daily wear for photo props or show, performance wear. Bring the greatest eye protection against UV/wind/water/debris. Flexible BandAdjustable elastic strap can adapt to fit the size of your dog and the chin strap design let you never worry about falling off easily. Head and chin have a precision elastic webbing make it easy to wear. Fashionable Decor: Heart shape designed fashionable dog glasses, suitable for daily wear, photo shot, parties, weddings and holidays, dress up your dog to make it more eye-catching, chic and charming. Sponge Pad Inside: Sponge is padded around the lenses, high density sponge has a great breathable effect for perfectly alleviating eyestrain or the pressure from the glasses and the dog will not feel uncomfortable for long-time wearing. Fit for: Applicable head circumference: 18-29.5cm, applicable low jaw circumference: 13-22cm. Suitable for puppy, Yorkshire Terrier, Dachshund, Poodle, Shih Tzu, Miniature Schnauzer, Chihuahua, Pug, Pomeranian, Boston Terrier, Maltese, Teddy, Bichon Frise, Shorthair, Balinese, etc. (Please measure dog head and jaw size before ordering dog sunglasses.)