Utilizing the latest carbon fiber heating element technology to make this heating scarf washable. Penetrate heat and relieve neck pain while you are on the go or at home. Styled, cordless, powered with detachable, hidden power bank. Made of washable, skin-friendly, and cozy warm fabric. Heating with 3 selective temperature levels (Low, Medium, High). Equipped with certified detachable power bank, safe to use and wash. Removable power bank and USB charging cable are included. Auto shut off in 45 minutes. Warm fabric lining.