Johnson & Johnson Band-Aid First Aid Shower Care Bandage Protector, Medium, 4″ 5.” (10.1 cm 12.7 cm), 4 count. Band-Aid Brand of First Aid Products Shower Care Medium Bandage Protectors help to keep water, dirt, and germs out of your wound while showering. This 100% shower-proof bandage protector forms a four-sided water-resistant seal that completely covers your existing bandage or gauze. This clear shield protector allows the bandage to remain visible. These medium-sized bandage protectors are not made with natural rubber latex.