OPSITE FLEXIFIX Transparent Film Roll. Features: Transparent, Conformable, Unique roll format. Benefits: OPSITE Film. The film is waterproof and a barrier to bacteria. Its high moisture vapour permeability allows the skin to breathe. The acrylic adhesive minimises the risk of skin damage on removal, especially after long periods of wear. Adaptable to awkward areas. OPSITE FLEXIFIX has been designed to allow easy application of the film to awkward areas of the body and over dressings and tubes. The film is highly conformable and extensible to increase patient comfort. Unique Roll System. The unique and novel roll format enables rapid and economical use of the OPSITE film to create comfortable, waterproof fixation for dressings.