?Universal Size?:One size fits for Children, very elastic and harmless to skin. 5x3cm Strethed for 5.5inch. Color:Pink. ?Operational Principle?:They work by applying pressure on the Nei-Kuan acupressure point on each wrist by means of a plastic stud that work to restore balance in the body. ?No Drug or Side Effect? :This drug free band provides a natural choice and is the healthiest way to relieve motion sickness, as it does not cause drowsiness, there are no drugs or any side effects. ?Safe material?:It is made of polyester cotton and plastic, elastic, healthy, reusable. ?Healthy and Effective?:Don't let motion sickness ruin your journeys whether by land, air or sea. Provides effective relief from motion sickness, travel sickness, morning sickness and all forms of nausea.