The wound dressing is made of transparent and waterproof PU film. It is breathable, letting oxygen in and moisture vapor out, allowing the skin to function normally. The sterile film barrier is impervious to liquids, bacteria and viruses, providing and effective barrier to external contaminants. It is hypoallergenic for maximum comfort. The advantages of the products: Non-caked with wound and soft, which can protect wound, decrease the pollution chances and avoid the wound infection. www.conweimedical.com