An elastic bandage is a “stretchable bandage used to create localized pressure”. Elastic bandages are commonly used to treat muscle sprains and strains by reducing the flow of blood to a particular area by the application of even stable pressure which can restrict swelling at the place of injury.
Elastic bandages usually come in 2-6 inch widths. The wider the bandage, the more compression you get without blocking actual blood flow. Typically, for an adult arm or leg, you want to use a 3- or 4-inch bandage.
Adult fingers and kids’ arms and legs can get away with the narrower 2-inch width bandage.