Grey Mailing Bags

Trade Volume Rates

Engineered from puncture-resistant, co-extruded polythene, these mailers provide a total moisture barrier to keep clothing and boxed goods bone-dry in transit. Designed with a high-tack, tamper-evident peel-and-seal strip, they lock tightly instantly to protect your shipments from theft and bad weather while giving your e-commerce brand a clean, professional finish. Features an industrial-strength, self-adhesive permanent seal that cannot be reopened without tearing the bag. Dark silver-grey exterior combined with a black interior lining ensures complete privacy for high-value items. Waterproof polythene material absorbs heavy warehouse scuffs and transit friction without splitting. Ultra-lightweight construction keeps package weight down, dramatically lowering your courier postage fees.

Select dimensions and view bulk pricing options.

Select dimensions and view tiered volume rates. Enter required pack quantities below.

Grey Mailing Bags prices by size. Each price is per unit, excluding VAT. Choose a price to set that quantity, or enter a quantity in the last column.
Info	Opening width × length	Reference	Units per: Pack	Price per:					Enter no. of units
Info	Opening width × length	Reference	Units per: Pack	1-4Packs	5-9Packs	10-24Packs	25-99Packs	100+Packs	Enter no. of units
	150 × 230 mm Royal Mail Large Letter size	GM69	2,000
	170 × 230 mm Royal Mail Large Letter size	GM79	2,000
	230 × 305 mm Royal Mail Large Letter size	GM912	1,000
	255 × 355 mm	GM1014	1,000
	305 × 355 mm	GM1214	1,000
	330 × 435 mm	GM1317	500
	435 × 610 mm	GM1724	500
	535 × 610 mm	GM2124	500
	560 × 760 mm	GM22304	400
	560 × 760 mm	GM22305	500

Packaging assistant

Not sure which size or grade you need?

Ask about materials, sizing and specifications for Grey Mailing Bags. Prices and volume rates are in the table above, and the guides below cover the common choices.

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About Grey Mailing Bags

Grey mailing bags, also called postage bags, poly mailers or courier bags, are the lightest and lowest-cost way to post clothing, textiles, soft goods and items that are already boxed. They are waterproof, tear-resistant polythene, grey outside and black inside, so the contents cannot be seen through the bag.

Permanent peel-and-seal strip: once closed, the bag cannot be opened without damage, which shows tampering
10 sizes from 150 × 230 mm (6 × 9 in) up to 560 × 760 mm (22 × 30 in)
Popular sizes: 230 × 305 mm (9 × 12 in), 255 × 355 mm (10 × 14 in) and 305 × 355 mm (12 × 14 in)
Sold in bulk packs, with lower prices for larger orders

A mailing bag weighs far less than a box, which helps keep parcels in a lower postage weight band. For fragile items, choose bubble bags or padded envelopes instead.

How the volume pricing works

The price per pack drops as you order more of one size. The rate is set by the number of packs of that size on your order:

1-4 Packs: 1 to 4 packs
5-9 Packs: 5 to 9 packs
10-24 Packs: 10 to 24 packs
25-99 Packs: 25 to 99 packs
100+ Packs: 100 packs or more

Choose a price in the table, or open a size's product sheet, to see the rate for your quantity before you add it to the basket.

Sizes: 10 (10 in stock)
Price per pack: £19.00 – £94.00 ex VAT
Pack sizes: 400, 500, 1,000, 2,000 per pack
Category: Postal Packaging