Blue Plasters by Medicare (30) Plasters Blue flexible, waterproof detectable plasters Blue Plasters for minor cuts and grazes. Features of Medicare Blue Plasters. Waterproof and flexible plasters made from a PVC material. Hypoallergenic. Skin-friendly adhesive. Each plaster contains tiny metal filaments that can be detected by metal scanning equipment. Blue coloured for easy detection in food preparation areas. Non-stick extra absorbent wound pad. Individually wrapped. Size 19mm x 72mm