1. The product has great toughness and flexibility. It is suitable for all kinds of cat and dog faces. 2. The head and jaw are adjusted with elastic bands. The pets are comfortable to wear and are not easy to fall off. 3. The eyeglasses frame is surrounded by soft materials. The eyeglasses are soft and comfortable for dogs to wear. 4. Made of high-quality plastic, it is durable and has long service. 5. It can protect pet eyes from the strong solar ray.