This is a knit cap from COMME CA ISM. My child wore it for warmth at the ski resort when not skiing (they wore a helmet while skiing). They no longer use it, so please use it if the size fits. It was used by an upper elementary school student. It can be used by both boys and girls. Actual size: Opening: 23cm Height: 18.5cm Please consider this purchase with the understanding that returns and exchanges are not possible.