Fit for: Applicable head circumference: 15-20cm, applicable jaw circumference: 17-24cm. Material: Lenses are made of AC resin, spectacle frame uses EVA+PC material, durable, lightweight, and comfortable. Suitable for small dogs as daily wear photo props or for performances. Provides eye protection against UV, wind, water, and debris. Flexible band with adjustable elastic strap adapts to your dog's size. Chin strap design helps prevent the glasses from falling off. Precision elastic webbing on head and chin areas allows for easy wearing. Wide application: Dog glasses are suitable for daily wear, photo sessions, parties, weddings, and holidays. Dress up your dog to make it more eye-catching, chic, and charming. Sponge pad inside: High-density sponge padding around the lenses offers excellent breathability, helps relieve eyestrain and pressure, and ensures comfort during extended wear. Suitable for breeds such as puppy, Yorkshire Terrier, Dachshund, Poodle, Shih Tzu, Miniature Schnauzer, Chihuahua, Pug, Pomeranian, Boston Terrier, Maltese, Teddy, Bichon Frise, Shorthair, Balinese, etc. (Please measure your dog's head and jaw size before purchasing dog sunglasses.)