[Specifications]: One size, suitable for dogs with more than 12 kg, mini, toys, super small pets are not suitable
The lens part is stretched to a maximum of about 17cm. The widest part is about 5cm.
The strapping bandwidth is about 2cm, and the chin straps are stacked up to a maximum length of about 19cm, and the minimum length is about 9.5cm.
The back brain straps are stacked up to a maximum length of about 17 cm and adjusted to a minimum of about 8.2 cm.