This is a fleece sleeper, also known as a "kaimaki" (a type of Japanese sleeping garment). The size is 35cm x 50cm when laid flat. It should last a long time for children with slender builds. There is a part that has become rough from being exposed to a heater. Please check the other details in the photos. Please understand that this is a used item. #Pumpkin's_Items_Children's_Goods #Pumpkin's_Items_All Boy, Car - Color: Light Blue - Design: Car pattern - Material: Fleece - Closure: Zipper Thank you for looking.