Our lightweight and 100% opaque White Heavy Duty Mailing Bags offer fantastic protection to a variety of heavier and/or shaper items during transit. Manufactured from tougher and more durable polythene, these heavy duty mailing bags are tear resistant. These 250mm x 350mm mailing bags are also co-extruded, which means several layers of film are extruded together for even securer protection.

These white heavy duty mailing sacks (250x350mm) adhere to Royal Mail’s PiP guidelines, so you can accurately calculate your postage costs.

Product Details

• Heavy duty mailing bags made from 90 micron (354 gauge) thick, co-extruded polythene.
• Almost double the thickness of regular polythene mailing bags..
• Made from co-extruded material, using several layers of film for tear-resistance - perfect for heavy or sharp items.
• Off-white outer and black inner so bags are 100% opaque.
• Closure: All mailing bags have a peel and seal strip, for easy and secure closure.
• Colour: White.
• Dimensions of Mailing Bag (Opening W x L): 250x350mm / 25x35cm / 9.75×13.75 Inches.
• Thickness: Made from 90 micron (354 gauge) thick, co-extruded polythene.
• For size guidance only this would replace the following Kite Packaging code: PBH250X350+40MM-WHI.
• Fast Printed Packaging SKU Code: MCP-4025S-FPP.

Please note: these bags may or may not be printed with suffocation warning.

Please note: we have updated the print on these bags. You may receive a different print to the images.

Due to manufacturer tolerances, actual item dimensions may vary by 10–20mm. If precise sizing is important for your project, we strongly recommend requesting a sample before placing your order.

All of our products are printed right here in our own UK warehouse, which means we can offer some of the fastest turnaround times in the country. And because everything is produced in the UK (unlike many other providers), you’ll never have to worry about customs delays or surprise charges.