Pet Cat Lion Mane & Puppy Dog Lion Wigs Mane Hair Fancy Dress Costume M Brown Toy-like Lion Mane Stuffed & Plush Toy Cat Lion Hat for Cats and Dogs Halloween, Christmas SIZE: S for Puppy dogs and cats with a collar size11inches-9inches, not fit for large dogs such as golden retriever M I deal for Puppydogs and cats with a collar size 12inches-10inches, not fit for large dogs such as golden retriever L I deal for Puppy dogs and cats with a collar size 14inches-11inches, not fit for large dogs such as golden retriever Gender: Pet,Puppy Dog,Cat Pet Dog Cat Lion Wigs Mane Hair Fancy Dress Costume Large 100% hand made, you may use the elastic cord to tighten it for there might be slight difference in measure. The hair would drop a bit since it's pure hand made, but it would affect daily usage.