1pc Outdoor Pet Glasses, Suitable for Small And Medium-Sized Dog Glasses, S/M Size And Multi-Color Outdoor Activity Pet Dog Glasses Can Be Selected Masks Strap

Size S: Length 4.5 inches (11.42 cm), width 1.7 inches (4.31 cm), adjustable head strap length: 6 inches (15.23 cm) - 10 inches (25.39 cm), adjustable chin strap length: 5 inches (12.69 cm) - 9 inches (22.85 cm). Ensure to measure your dog prior to buying. Size M: Length 5 inches (12.69 cm), width 2 inches (5.07 cm), adjustable head strap length: 13.5 inches (34.28 cm) - 18 inches (45.71 cm), adjustable chin strap length: 6 inches (15.23 cm) - 9 inches (22.85 cm). Ensure to measure your dog prior to buying.