Blue Mailing Bags – Premium Strong Self-Seal Postal Bags for Stylish E-commerce
Which Blue Mailing Bag Size Do I Need?
| Size | Metric (mm) | Typical Use |
|---|---|---|
| 10×14″ | 254×355 | Books, T-shirts, accessories |
| 12×16″ | 305×406 | Hoodies, jeans, small gifts |
| 15×18″ | 381×457 | Jackets, multi-item apparel |
| 17×22″ | 432×559 | Bedding, coats, bulkier soft goods |
Why Choose Blue Mailing Bags?
Blue mailing bags give a clean, professional look while protecting every order. They share the same 60 µm film strength and moisture-proof protection as our grey and coloured ranges, but deliver a cooler, more dependable tone – perfect for brands that want quality packaging without bright hues.
Eco & Materials
Made from 100 % recycled LDPE (code 4) and recyclable through supermarket soft-plastic collection points. These bags are not biodegradable or compostable, but their recycled content and lightweight build help cut packaging waste and transport carbon.
Packing & Postage Tips
- Use the smallest size that closes flat – reduces postage bands.
- Press out air for a tidy, letter-friendly shape.
- Pad sharp box corners to prevent punctures.
- Add a document wallet for invoices or labels.
Prefer a Different Colour?
If you’d like a change of tone, explore our Grey, Pink, Green or Purple mailing bag collections.
All colours share the same 60 µm recycled LDPE construction and self-seal design – so whichever you choose, your parcels stay protected, professional and planet-friendly.
Order today for fast UK dispatch and bulk discounts on trusted eco mailing bags.
FAQs – Blue Mailing Bags<
Helpful answers for sellers choosing strong, recycled blue mailing bags
No – they’re moisture-proof / water-resistant, protecting against rain and splashes.
Four key sizes: 10×14″, 12×16″, 15×18″, 17×22″. All made from 60 µm recycled LDPE.
Yes. They are LDPE code 4 and recyclable through many supermarket return schemes. Remove the glue strip first.
Popular with fashion brands, accessory stores, tech sellers and subscription services wanting neat, non-flashy packaging.
Yes – the self-seal adhesive strip gives a permanent closure that shows any interference.
Yes, the range fits standard Royal Mail small and medium parcel bands when packed flat.
60 microns (0.06 mm) – strong enough for clothing and boxed goods.
Yes – contents remain private even under bright light.
Keep flat between 13–21 °C, out of sunlight; let cold stock warm before sealing.
Yes, some customers apply stickers or thermal labels; custom printing may require specialist ink for LDPE surfaces.