Silver Wound Contact Layer Dressing Invia® Silverlon®NPWT 4 X 5 Inch Rectangle SterileSilver ions delivered in the dressing when activated by moisture provide a barrier to bacterial penetration which can help reduce infection Can be cut or overlapped to fit any wound size Non adherent for comfortable dressing changes A single layer of knitted nylon fiber substrate coated with metallic silver This antimicrobial wound contact dressing model is knitted to a specified pattern designed to allow optimal flow rate of wound exudates when used