Acticoat 7 Day Dressing 4"x5" (with SILCRYST(tm) Nanocrystals), product 20141, is an barrier dressing which provides effective barrier to bacterial penetration. The wound dressing's barrier function may help reduce infection. Acticoat 7 Day dressings can be cut to the desired shape and size to wrap around all body parts. The sustained release of silver also means fewer dressing changes, resulting in less exposure of the wound bed to the environment, reducing the risk of infection. Acticoat 7 is cost-effective because it can be left on wounds for up to 7 days. Sold individually. Also sold by a box of 5.