Two-tab delivery system allows one-handed aseptic delivery.. Rounded edges help prevent roll up.. Semi-permeable, moisture responsive film is impermeable to external liquid and micro-organisms.. Improved breathability allows moisture and oxygen vapor exchange for longer wear time.. Improved wet adhesion properties for better adhesion in moist environments. Outstanding barrier to bacteria and fluid contaminants. Waterproof. 2 x 2¾ inches. . WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov