Adjustable size: for the pet dog helmet, its strap length is 6.5 - 7.5 inch/ 16.5 - 19 cm, diameter is approx. 3.5 inch/ 8.8 cm, height is approx. 2.2 inch/ 5.5 cm and the circumference is approx. 12.3 inch/ 31.2 cm; For dog goggles, the applicable head circumference is 20 - 32 cm/ 8.6 - 12.6 inch, applicable low jaw circumference is 17 - 24 cm/ 6.7 - 9.4 inch. Suitable occasions: if your pet likes to follow you when you hop on your motorcycle or scooter, it should wear safety gear, which includes goggles and, of course, a helmet; The pet dog helmet and goggles are suitable for daily wear, taking part in parties, weddings and holidays; You can also dress up your dogs to make them eye-catching and charming. Adjustable strap design: the protective cool glasses are designed with an adjustable double strap for head and chin, and the pet helmet is designed with an adjustable and flexible nylon chin strap, which can be adjusted and tightened according to your puppy's size, buckles closure makes it convenient to wear. Soft and reliable: the dog helmet is made of quality ABS material with adjustable chin strap and inner soft detachable sponge mat, which is soft and comfy to wear; Pet glasses made of PC and AC material feature hard lenses for safety, sturdy, durable and long-lasting, protecting your pet's head and eye from sunlight, wind or pointed objects, providing your pets with good protection. Nice combination: the package contains 1 piece of pet dog helmet and 1 pair of dog sunglasses, nice combination for small dogs or cats, such as Teddy, Pomeranian, Bichon, Chihuahua, Yorkshire terrier, Pug, Corgi, Maltese, etc.Best Sellers Rank: See Top 100 in Pet Supplies. Brand: Frienda. Breed Recommendation: Small Breeds. Neck Size: 9.4 inches. Size: Small. Target Species: Dog, Cat. : B094R5PTXZ. Manufacturer: Frienda. Date First Available: May 12, 2021. Package Dimensions: 6.26 x 4.8 x 2.6 inches; 8.47 Ounces.