The outside of the beanie is made from spun poly, 92% polyester, 8% spandex knit fabric. The lining is a lightweight bamboo lining, 95% bamboo rayon, 5% spandex. The fabrics are highly pill-resistant.
With a tape measure, measure around your head at the widest part just above your ears.
Machine wash cold with a phosphate free detergent, lay flat to dry.