Each dressing is constructed from an opaque blue polystyrene/polyurethane film spread with a low allergy acrylic adhesive. Each dressing is sterile, waterproof, impermeable to oil and fat and acts as a viral and bacterial barrier.
Detectable by three methods:
- X-ray by tungsten filaments
- Visually by signal blue contrast colour
- Metal detectable (non-ferrous) by aluminium content