Smith & Nephew Foam Dressing OpSite Post-Op Visible 4 X 11-3/4 Inch With Border Waterproof Film Backing Adhesive Rectangle Sterile #66800140Features OPSITE Post Op Visible Dressing has a triple layer construction combining a low adherent wound contact layer, a hydrocellular foam pad and the patented REACTIC Film, which responds to transpire excess moisture The film is waterproof and bacteria proof while the dressing remains intact The lattice design of the hydrocellular foam pad allows continual visibility to the wound site and surrounding skin without changing the dressing OPSITE Post Op