DURABLE: This mildew-resistant tape is made from acrylic adhesive-backed polyethylene terephthalate (PET). GREAT AS A SEALANT: It is ideal for sealing around basins, baths, shower trays, WCs & sinks. INDOORS & OUTDOORS: It is suitable for both indoor & outdoor use. DIMENSIONS: The hazard tape is 4m (13ft) x 30mm (1.2”) in size.