Strong elastic webbing for Sofa Seats as used by many furniture manufacturers. Four (4) stripes denotes the highest quality suitable for use on chair and sofa seats. Width is 50mm being the standard upholstery size. Double ends of natural rubber are inter-woven with strong polypropylene thread to produce a strong long-lasting webbing. Tenison applied to elastic webbing is unique to each furniture manufacturer depending on their particular production techniques. The EW450 has the capacity to be stretched to 50% of its length without affecting its ability to perform. Warranted for five years under normal use. Sold by the metre and with quantity breaks offered of 10+, 20+ and 50+ metres.