This is a bird collar. I hope to help ease the owner's sadness and, above all, make the bird's recovery a brighter experience. Set of 5. Approximately 5 cm in diameter. Center hole 5 mm. Outer fabric: cotton, Lining: polyester (felt) Completely handmade by an amateur. *Colors and patterns will be sent randomly. Please refrain from purchasing if you are concerned about minor imperfections. Depending on the bird species and the bird's personality, the collar may be destroyed quickly. Please understand that we do not offer any guarantee in such cases. [Note] This is not a product recommended for medical treatment. Please consult with a doctor before use. ◆If you would like a different size, please comment. ◆No price reduction. ◆No complaints. ◆Cancellations are not accepted after purchase. ☆The bird in the photo is not for sale (´艸｀) *The price of the product has been increased due to the increase in postage rates. Thank you for your understanding.