Thank you for viewing! 【Size】 The neck opening has elastic and measures approximately 29cm unstretched. This is a cute, wavy bib. It can be used as a bib for babies, or as a collar for kids up to around 4-5 years old. How about using it as an accent for your outfit? Please note that due to the handmade nature of the product, there may be slight variations in size. Please understand this before purchasing. I have other items for sale, and I offer a discount for combined purchases. Please comment if you are interested. Thank you!