Hydrofera Blue READY Foam Dressing Medical Monks Amazon.com: Hydrofera Blue Bacteriostatic Foam Dressing 4" X 4", Box of 10 : Health & Household Amazon.com: Hydrofera Blue Bacteriostatic Foam Dressing 4" X 4", each : Health & Household A superabsorbent dressing is designed to work optimally on exuding wounds by absorbing wound fluid and encapsulating it in a gel core. Because of the dressing's effective way of managing wound exudate, Coast to Coast Clinicians Choose Blue Hydrofera Blue Classic Foam Dressing Hydrofera Blue Dressing