Product features A pet helmet is the perfect accessory if you take your pet hiking, riding, or in the car. It not only improves your pet's appearance but also protects your pet's head. Shell resistant to falls and impacts. High corrosion resistance, resistant to falls. The quick-release buckle is easy to control and can be adjusted as desired. ABS material design. The helmet has a fall and crush-resistant shell, high strength, corrosion resistance, and internal crush-resistant design. There is a head cushion on top of the helmet; pets will not feel uncomfortable when wearing it. Adjustable design. With nylon straps and safety buckles, easy fit, safe and beautiful to wear. Name: Pet Helmet and Glasses Set Color: Black Size: S, M, L Weight: S 55.4 g, M 80 g, L 110 g Suitable for: medium dogs, small dogs, cats Material: ABS+cotton frame+polyester S diameter: 9 cm, head circumference 26 cm M diameter: 11 cm, head circumference 32 cm L diameter: 14 cm, head circumference 40 cm