Medical Armband Update Card and Holder The health card is a requirement in the world of Evening. The United States Evening Association now requires that all riders in sanctioned events carry their medical records on there person at all times and that it must be clearly seen. For anyone that rides to have this information handy in case of an emergency, can save valuable time if your are injured. One size fits all. The band is elasticized with hook and loop tabs. This band has the riders name, phone number, address and other personal information, as well as information about blood type, allergies and physicians. Size of the holder is 4 5/8 high x 4 1/4 wide.