Clear polythene lay flat tubing perfect for sealing with impulse heat sealers. Low density flat tubing (also known as poly tubing) is a cheap and versatile polythene wrapping and packaging material used extensively in packing departments, factories, agriculture and warehouses to produce custom polythene bags, packaging odd or long items and objects of the same width but in various lengths. Simply insert your object into the polythene tubing, cut to length and seal. To be used with heat sealer and unrolling device for best results.