1 Roll Polythene Repair Tape 3'' 75mm. Highly adhesive and UV stabilized makes it resistant to weathering and the harmful effects from sunlight. This highly transparent, clear tape gives maximum light transmission.
Roll Polythene Repair Tape 75mmx25m
Again come in various sizes to suit your needs
50mm x 25m , 100mm x 25m and 150mm x 25m
This will repair the polythene.
Easy to apply, Make sure the polythene is clean and dry.