BNWT HEAD CIRCUMFERENCE Measure the crown of your pet's head, indicated with the red dotted line on last photo. Intended for pets only. Not intended for children or adults to protect against the sun. This item is not to be worn outside as sunglasses to protect the eyes against strong sunlight WARNING Choking hazard. May contain small parts Only for use in a short duration and under close supervision. Sizing should provide room for at least two fingers to fit between product and pet's neck. To avoid risk of ingestion and entanglement, supervise pet when item is in use 🌟Thanks for visiting my closet! 🌟Check out my other listings & bundle to save! 🌟Have a question? Feel free to ask 🌟Offers and counter offers are welcome. 🌟Ships same or next business day 🌟Colors may vary slightly due to photographic lighting and screen resolutions 🌟No Poshmark account yet ? Sign up now with my promo code B_twlns to save $10 on your first order.