Material:cotton Size: Free Size Approximately Width 9cm, Length 13cm Not only extend the length of your little one's vests, they also extend the time you can see those cute vests on your baby. Brand new, high quality Package Includes: 3pcs Product description Ease of use: The reinforced brooches can be connected better with the mono babies, are durable and easy to use. Feature: These white baby vest extenders not only extend the length of your little one's vests, they also extend the time you can see those cute vests on your baby. Whether you are using cloth nappies or not, you will soon notice these little extenders are so much environmentally friendly as well as your pocket friendly. Product name: Romper, fart, one-piece, extension piece Yan color: white Surface material: pure cotton, stainless steel. Stainless steel will not rust even after being buckled into water. Don?t worry about it rusting clothes after a long time. Size: Free Size Approximately Width 9cm, Length 13cm The diameter of the button is about 9.5mm (size by yourself, please understand if there is an error) Package Includes: 3pcs