Blue Mailing Bags 10×14" (254×355 mm) – Premium Strong Self-Seal Postal Bags for E-commerce Shipping
Blue Mailing Bags 10×14" (254×355 mm) – Premium Strong Self-Seal Postal Bags for E-commerce Shipping
Blue Mailing Bags 10×14" (254×355 mm) made from 60 µm, 100% recycled LDPE (code 4). These self-seal postal bags are moisture-proof / water-resistant, fully opaque for privacy and built for daily e-commerce dispatches. Trusted by UK online sellers on eBay, Amazon, Etsy and Shopify, with bulk discounts available.
Not the size you need? See all sizes.
Strong 60 µm Eco Postal Bags – Blue 10×14"
The co-extruded 60 µm film resists tears and scuffs, the permanent peel-and-seal bonds fast, and the opaque blue finish gives a clean, professional look that stands out in transit and on the doorstep.
Why this 10×14" size?
10×14" is the everyday “small-order” workhorse. It fits folded T-shirts, paperbacks and smaller boxed goods while keeping parcels compact for cheaper postage bands. The blue colour adds a fresh, branded feel without the cost of custom print.
Real use examples
- Folded T-shirts and light tops
- Books, stationery and small gift sets
- Phone cases, cables and accessories
- Cosmetics kits and sample packs
Fit & packing guidance
Best for contents up to approx. 235×330×40 mm. If tight, step up to 12×16". Round or pad inner-box corners and press out air before sealing for a flatter parcel and lower postage volume.
Key benefits
- Strong self-seal – permanent, tamper-evident bond
- 60 µm recycled LDPE – tear/puncture resistance
- Moisture-proof / water-resistant outer
- Opaque blue – privacy and brand presence
- Lightweight – helps reduce courier/Royal Mail costs
- Recyclable LDPE (code 4) – return-to-store schemes
Eco & Materials
Made from 100% recycled LDPE to reduce virgin plastic use. Not biodegradable or compostable. Recycle via soft-plastic return schemes (remove the glue strip).
Strength & Protection
Durable co-extruded film helps resist tears and punctures, while the tamper-evident seal protects orders in transit. Opaque blue film ensures privacy.
Storage & Performance
Store flat between 13–21 °C away from heat/sunlight. Let cold stock acclimatise before use for a reliable adhesive bond.
Lightweight = Lower Postage
Mailing bags weigh less than cartons, helping you stay within lower weight bands while still protecting soft goods and boxed items.
Size comparison
| Option | Size (in + mm) | Typical fit |
|---|---|---|
| Step up | 12×16" (305×406 mm) | Hoodies, jeans, small boxes |
| This page | 10×14" (254×355 mm) | T-shirts, books, accessories |
Packing tips
- Fold garments to minimise depth
- Press out air before sealing
- Pad sharp inner-box corners
- Use a document wallet for labels/paperwork
Related sizes & essentials
Same colour sizes: 12×16" • 15×18" • 17×22"
Essentials: Mailing Bags • Document Wallets • Packaging Tape • Cardboard Boxes
Order today for fast UK delivery and bulk savings on daily dispatches.
| Material | LDPE (code 4) |
| Size | 10x14 Inch (254x356 mm) |
| Color | Blue |
| Closure | Peel-and-Seal (Permanent) |
| Recyclability | Return to Supermarket Soft-Plastic Points |
| Thickness | 60 µm |
| Water Protection | Water-Resistant |
Which items best fit inside the 10×14" blue mailing bag?
Why choose a blue mailing bag instead of a standard grey one?
Does the bag include a self-seal strip and how secure is it?
Are these blue mailing bags recyclable and eco-friendly?
What is the film thickness of the 10×14" mailing bag and why does it matter?
Is the bag water-resistant and suitable for courier transit in the UK?
Can this 10×14" blue bag be used with UK couriers like Royal Mail and DPD?
How should I store these bags to maintain consistent seal performance?
Can I use the 10×14" blue mailing bag internationally and still stay within courier size limits?
How does the 10×14" blue mailing bag help reduce packaging waste and costs?
Are these blue mailing bags fully opaque for privacy?
Royal Mail 24 Tracked
Dispatched same day if ordered before 5 pm Monday to Friday. Please allow up to 1-2 days for delivery.
£1.99
DPD Next Day
Dispatched same day if ordered before 3 pm Monday to Thursday. Not available to Scottish Highlands & Islands.
£4.99
Free on orders over £100