Anpanman Knit Cap Argyle Pattern Color: Navy Size: S [46cm - 52cm] Excluding pom-pom (width) 18cm x (height) 17.5cm A warm knit cap that covers the ears completely. I don't remember the exact frequency of use, but I used to wear it until around the time my child could sit up. Please refrain from purchasing if you are looking for a perfect product, as it has been stored at home.