Zephyr Knit Cap Size is not indicated, so I've listed it as free size. Flat measurement: Head circumference 24cm Only tried on after taking it out of the bag. This is a pre-owned item stored at home. Unfortunately, I cannot recommend it to those seeking a perfect item. m(_ _)m I will ship it via Nekopos, so the pom-pom will be flattened for shipping. Please understand and agree to the above points. Feel free to ask any questions you may have ^_^