Mailing Bags - Lightweight & Weatherproof Postal Protection
Bulk discounts available. Next day shipping from our Glasgow, UK warehouse
Packn supplies a full range of mailing bags designed for e-commerce, retail, and courier shipping. Our bags are tear resistant, waterproof, and durable, giving you peace of mind when sending goods through courier distribution networks. Available in multiple sizes, we cover a range of small, medium, large and extra large sizes.
Our mailer bags are widely used as clothing mailer bags, making them the go-to choice for fashion and online retailers who want packaging that's lightweight, cost-effective, and professional. For non-fragile items, postage mailing bags are often a better alternative to boxes, reducing shipping costs while still keeping products safe and secure.
Each bag features a strong self-seal adhesive strip, eliminating the need for extra tape and speeding up packing. Supplied flat-packed for easy storage, our postal bags are made from recycled materials and are also 100% recyclable, helping businesses reduce their environmental impact.
We offer bulk discounts at competitive prices, plus next-day UK delivery from our Glasgow warehouse. If you have any queries, check out our FAQ's section.
| Image | Micron | Colour | Bag Length | Bag Width | Case Size | Bulk Price | Buy | Total | ||||||||||||
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 | 50mu | Grey | 350mm | 250mm | 500 |
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| 50mu | Grey | 850mm | 700mm | 50 |
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| 50mu | Grey | 600mm | 425mm | 200 |
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| 50mu | Grey | 485mm | 330mm | 500 |
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| 50mu | Grey | 405mm | 350mm | 1000 |
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| 50mu | Grey | 900mm | 600mm | 250 |
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| Image | Micron | Colour | Bag Length | Bag Width | Case Size | Bulk Price | Buy | Total |
Frequently Asked Questions (FAQs)
What are mailing bags?
Mailing bags, also known as postage mailing bags, are lightweight and waterproof packaging made from strong polythene. They are widely used for e-commerce shipments, clothing, and retail shipments where protection, speed, and cost-efficiency are important factors.
What sizes of grey mailing bags do you stock?
We supply 50 micron grey mailing bags in the following sizes:
Small
- 250 x 350mm + 40mm lip
Medium
- 330 x 485mm + 50mm lip
- 350 x 405mm + 40mm lip
Large
- 425 x 600mm + 40mm lip
Extra Large
- 600 x 900mm + 50mm lip
- 700 x 850mm + 50mm lip
This range covers everything from small items to bulky products and clothing postal bags.
Are grey mailing bags strong enough for shipping?
Yes. At 50 micron thickness, our mailing bags are stronger and more durable than standard 40 micron bags which makes them much more tear and puncture resistant. The waterproof material makes them ideal for shipping all around the world and peel and seal ensures the contents remain secure and tamper evident for deliveries.
Can mailing bags be used for clothing?
Absolutely. Our grey mailing bags are widely used as clothing mailer/postal bags. They are lightweight, protective, waterproof, and ideal for fashion retailers and e-commerce businesses sending garments directly to customers.
Are grey mailing bags recyclable?
Yes, our grey mailing bags are made from LDPE material with recycled content which makes them 100% recyclable as long as they are clean and free from labels and tape (the leftover glue can complicate the recycling process).
Most UK supermarkets have a soft plastics recycling stream and in-store collection bins (e.g. Tesco, Sainsbury’s, M&S, Morrisons etc.).
What are the advantages of using mailing bags over boxes?
- Lightweight: helps reduce postage costs.
- Waterproof: protects goods from rain or moisture.
- Space saving: supplied flat-packed and easy to store.
- Cost-effective: cheaper than cardboard boxes for many products. Both on individual unit cost and shipping costs.
- Discreet: solid grey material keeps contents private.
Do you sell mailing bags in bulk?
Yes. We offer bulk discounts, making it cost-effective to order larger quantities. Whether you need a few packs or wholesale volumes, we supply at competitive prices with next-day UK delivery.
Which products are best used for mailing bags?
Our grey postage mailing bags are perfect for:
- Clothing and textiles (clothing mailer bags / clothing postal bags).
- Books, catalogues, and magazines.
- Shoes and accessories.
- Lightweight e-commerce orders.
- Non-fragile goods that don’t require boxes.
How do I seal mailing bags?
All of our grey mailing bags come with a self-seal adhesive strip on the flip (40mm or 50mm, depending on the size). Simply peel and press for a secure seal – no extra tape required.