Usually sealed with a heat sealer or stapler (not included in purchase). A high quality roll of polythene layflat tubing, 7" Wide x 336 metres in length, 250 gauge in thickness. The weight of the roll is 7kg. All the polythene layflat tubing we stock is UK manufactured to the highest quality standards. Polythene layflat tubing, also known as plastic clear tubing, is a transparent polythene tubing used for protecting/collating/wrapping various objects. Lay-Flat tubing is made of high quality polymers and offers strength, lubricity, chemical inertness, and biocompatibility.