Dick Bruna This is a Miffy sleeper. The fabric is cotton flannel. It has higher heat retention than gauze. I wore it during the changing seasons. 100% Cotton Width 40cm, Length 57cm I've listed it as size 70, but it can also be worn by sizes 80 and 90cm. It was very useful as it kept them warm even when they got out from under the covers. It has been worn for several years, so there is some pilling from washing. Also, there is a stain on the back, so please check the images. Please refrain from purchasing if you are sensitive. Please understand that there may be folding creases. I will fold it small for shipping. Thank you for your understanding.