I believe this is the size of a 1-2 year old toddler. It's handmade and reversible. The button closure uses elastic, making it easy to put on and take off. The buttons are also large, so you can quickly put it on your child. How about it for adjusting your baby's temperature? Length: Approximately 30cm Width: Approximately 30cm - Color: Red and purple check pattern, reversible - Material: Fleece-like fabric - Design: Button-closure vest Thank you for looking.