Mail Bags Extra Strong polythene envelopes

White mail bag envelopes. Helps to shield your parcels with a layer of tough polythene that's both weatherproof and resistant to tears.  Lightweight but extra strong, suitable for vinted or ebay selling.  Write on and recyclable. 3 or 5 per pack depending on size.  Choice of 3 sizes: Small- 16 X 23cm, Large- 32 X 44cm, Jumbo- 50 X 65cm.