Letool&reg;10pcs Cotton Anti-nausea WristBands Travel Car Sea Van Plane Motion Sickness Relief Wristbands IMMEDIATE RELIEF! - No Drugs, No Side Effects - Simple, Safe & Natural Acupressure Technology Proven Effective. Prevent nausea during car, sea and air travel for adult and children. material: Cotton / One size fits for all Put the button facing downward over the Nei-Kuan point, and press the button for 1-2 minutes Must be worn on BOTH wrists