Acrylic and polyesterWash by hand only.[Elasticity & Elasticity] The size of the beanie ranges from about 21 inches to 23.5 inches, and it can stretch the heads of most men and women comfortably without slipping off. Comfortable to wear[Comfortable and breathable] Made of cotton and polyester. The double-layer design is not only warm but not hot, suitable for wearing in all seasons. This soft, light, sweat-absorbing beanie can be worn all day without causing discomfort to your delicatehead.Practicality and versatility: Simple and stylish style can easily match casual outfits. It is used indoors and outdoors daily. It can also be used as a night cap and cancer chemotherapy cap.Washing instructions: hand wash or machine wash, gently wash in cold water. Lay to dry or hang to dry. Do not bleach. The ideal gift for family or friends.