Instant purchase OK! Other products → #sakuraSHOPS [Product Description] Cells at Work! White Blood Cell Hat Free size Size: Free size Approximately 54-60cm Made to fit a wide range of head sizes. The cap has an adjuster for easy size adjustment. Other hats → #sakuraSHOPSCellsAtWork → #sakuraSHOPShats *Please note that the manufacturing may be imperfect due to being made overseas. * Please refrain from purchasing if you are looking for a perfect product.