PolyMem Max Nonadhesive without Border Foam Dressing, 4 x 4 Inch-Foam Dressing PolyMem Max 4-1/2 X 4-1/2 Inch Without Border Film Backing Nonadhesive Square SterilePolyMem Max foam dressing can be combined primary and secondary dressing or as a secondary dressing Sterile dressing is nonadhesive and has no border; it's an optimal choice when cutting dressings to size and taping is your preferred method of application 4 x 4 inches