My Account Logged In
Enter any dimension below and we will automatically calculate the conversions.
Images / Videos
Heavy duty mailing bags are highly favoured by businesses looking to send heavy or sharp items through the post. They are also popular in mailing and dispatch industries, when sending bulky items such as catalogues and heavy pieces of literature.
Heavy duty mailing bags tend to be manufactured from much tougher and durable polythene than standard mailing bags; this makes them more tear-resistant.
We stock six sizes of heavy duty mailing bags, all of which comply with Royal Mail’s PiP guidelines so that you can accurately calculate your mailing costs.
All our heavy duty mailing bags are co-extruded, which means several layers of film are extruded together to create a more durable bag.
Use these bags along with our range of Multi-Purpose Labels.
Royal Mail base their postal charges on size as well as weight, and have recently introduced some new sizes. Ensure you keep your postage costs to a minimum by selecting the most suitable products from our range.
Jump to products
Most popular despatch sack. 55 micron polythene. Peel & seal strip.
Great value general use mailer, perfect for offices and mailing out products.
Robust and water resistant paper mailing sacks. Peel and seal strip for easy closure. Popular alternative to polythene mailing bags
Want to check the true roll length or thickness of your pallet wrap?
Simply fill out the values and hit Calculate