Size:4.4cm*4.4cm Features:transparent,waterproof,air-breathable,sterile Material: PU film,frame style,acrylic acid adhesiveSize:4.4cm*4.4cmFeatures ... outside 2.waterproof,easy for patients to take shower 3.transparent,can watch the wound any time 4.sofe and comfortable ... and be sterlized by Ethylne OxidePeriod of validity:2 years Transparent Film Dressing