Our pillows are ergonomically designed and tested by children to provide the best support for the neck, head and spine without compromising comfort.Ergonomic designFit the human skull to the skullComfortable support, dry and breathable, neck supportPillow fabric: polyester cottonShape: butterflyApplicable number: SingleFilling: Memory Cotton (Polyurethane)Applicable people: adultsHead socket support area to protect cervical vertebraeprompt:1 Please check the size and color before purchasing.2 Does not include items other than those shown in the product photo.3 Please note that due to different monitors, slight chromatic aberration may occur, please understand4. The measurement is manual measurement, the error is normal, please allow 2-3cm difference, depending on the actual object.5. Welcome your sharing and feedback so that we can provide you with better products and services.