Shipping is unavailable from January 13th to January 15th. Product number: AAL3850 Under Armour knit cap. Material: Acrylic. Size: OSFA (One Size Fits All) for women and juniors. Flat measurements: width at the bottom is 22cm, height is 19cm. It stretches. My daughter tried it on but never used it, and it has been stored at home. Please purchase if you understand. Instant purchase is welcome.