Best4Trade
Gray Mailing Bag from 4.5" to 43.5" PolybagGray Mailing Bag from 4.5" to 43.5" Polybag
Gray Mailing Bag from 4.5" to 43.5" Polybag
Couldn't load pickup availability
Free UK delivery on many qualifying orders over £50. Supplier and destination exceptions apply; charges are confirmed at checkout.
Delivery detailsGrey Mailing Bags
Our grey mailing bags are designed to be strong, durable, waterproof, and completely opaque—perfect for keeping your items secure during transit. Manufactured and imported using high-quality 50-micron (200-gauge) grey polythene, these mailers offer consistent strength and reliability. Each bag features a permanent self-seal adhesive strip, ensuring tamper-proof security once closed. Once sealed, the bags are difficult to open, helping to ensure your goods arrive intact and untampered.
Applications:
These grey mailing bags offer excellent value while protecting your items during shipping. The surface allows for easy writing and labelling, making them ideal for retail, mail order, and eCommerce businesses. Perfect for shipping clothing, shoes, gifts, and other soft or non-fragile items like T-shirts, scarves, and blankets. Their secure peel-and-seal closure makes them suitable for mailing everything from letters to small, medium, or extra-large parcels.
Key Features:
-
Colour: Grey
-
Sizes: Available in multiple sizes
-
Thickness: 50–60 microns (strong yet lightweight)
-
Seal: Permanent peel-and-seal closure
-
Adhesive: All-season glue—effective in both winter and summer
-
Security: Tamper-proof once sealed
-
Waterproof: 100% moisture-resistant for secure transit
-
Material: Opaque (Black interior) | Made from 100% recyclable low-density polyethylene (LDPE)
| ITEM | MATERIAL | SIZE | WEIGHT PER ITEM |
| Grey Mailing Bag | PL | 4.5x7" | 2.08g |
| Grey Mailing Bag | PL | 5x7" | 2.33 |
| Grey Mailing Bag | PL | 6.5x9" | 4.1g |
| Grey Mailing Bag | PL | 9x12" | 7.2g |
| Grey Mailing Bag | PL | 10x14" | 8.74g |
| Grey Mailing Bag | PL | 12x16" | 11.9g |
| Grey Mailing Bag | PL | 14x21" | 16.88g |
| Grey Mailing Bag | PL | 17x24" | 29g |
| Grey Mailing Bag | PL | 21x24" | 37g |
| Grey Mailing Bag | PL | 28x34" | 59g |
| Grey Mailing Bag | PL | 34x42" | 104g |
These mailing bags provide a reliable, eco-friendly, and secure solution for everyday shipping needs.
Specifications
Specifications
Delivery & Returns
Delivery & Returns
Free UK delivery on many qualifying orders over £50. Charges and eligibility vary by product, supplier and destination and are confirmed at checkout.
Most brands normally arrive within 3 working days, with occasional additional delays of 1–2 working days. Selected manufacturer-direct brands take 5–8 working days. All orders are tracked.
Delivery details and full brand list · Returns instructions
For urgent orders, email martin@glazingsuppliesdirect.com before ordering.
Trade Pricing
Trade Pricing
All prices shown are trade prices — no account or login required. Buy as many or as few as you need.
Share

-
Trade Pricing
No account needed
-
Tracked Delivery
Normally 3 working days
-
30-Day Returns
Unused & unopened
-
Pack Sizes
Bulk & single units
-
Estimated delivery: 3 working days Dispatched on a tracked service
-
Delivery available Delivery times and costs vary by supplier — shown at checkout
-
Easy Returns 30-day hassle-free returns
-
Secure Checkout SSL encrypted payment