Product Information: Quantities Available: 1 Roll, 2 Rolls, 5 Rolls.Extra Thick 500 Gauge Polythene, 168m Rolls, suitable for Heat Sealing. Packaging Shack’s range of high quality Polythene Lay Flat Tubing rolls are designed to be used to package items via a Heat Sealer. Made from 500 Gauge Virgin Polythene, this tubing is very strong and durable. Please note dimensions refer to the product when flat. Packing the tubing will decrease the available width.