Tegaderm™ Film consists of a thin film backing with a non-latex, hypoallergenic adhesive. The dressing is breathable, allowing good oxygen and moisture vapor exchange. It is waterproof and impermeable to liquids, bacteria, and viruses.* An intact dressing protects the site from outside contamination. *Laboratory testing has proven Tegaderm™ and Tegaderm™ HP Film provide a barrier against HIV-1 and HBV while the dressings remain intact without leakage.