
Grey Mailing Bags
Trade Volume RatesEngineered 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.
| Info | Opening width × length | Reference | Units per: Pack | Price per: | Enter no. of units | ||||
|---|---|---|---|---|---|---|---|---|---|
| 1-4Packs | 5-9Packs | 10-24Packs | 25-99Packs | 100+Packs | |||||
![]() | 150 × 230 mm | GM69 | 2,000 | 0.45p | 0.40p | 0.36p | 0.32p | 0.28p | |
![]() | 170 × 230 mm | GM79 | 2,000 | 0.52p | 0.46p | 0.42p | 0.38p | 0.33p | |
![]() | 230 × 305 mm | GM912 | 1,000 | 0.78p | 0.70p | 0.63p | 0.56p | 0.49p | |
![]() | 255 × 355 mm | GM1014 | 1,000 | 0.95p | 0.85p | 0.76p | 0.68p | 0.59p | |
![]() | 305 × 355 mm | GM1214 | 1,000 | 1.15p | 1.03p | 0.92p | 0.82p | 0.72p | |
![]() | 330 × 435 mm | GM1317 | 500 | 1.45p | 1.30p | 1.16p | 1.04p | 0.91p | |
![]() | 435 × 610 mm | GM1724 | 500 | 2.10p | 1.89p | 1.68p | 1.50p | 1.32p | |
![]() | 535 × 610 mm | GM2124 | 500 | 2.55p | 2.29p | 2.04p | 1.82p | 1.60p | |
![]() | 560 × 760 mm | GM22304 | 400 | 2.95p | 2.65p | 2.36p | 2.10p | 1.85p | |
![]() | 560 × 760 mm | GM22305 | 500 | 3.20p | 2.88p | 2.56p | 2.28p | 2.00p | |
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Compare outer containment layers across transit protection, volumetric DIM weight shipping costs, and high-velocity packing line throughput.
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In-depth engineering analysis of fluting profiles, Edge Crush Test (ECT) ratings, and McKee formula compression limits for B2B supply chains.
Packaging EngineeringSmall vs. Large Bubble Wrap: The Ultimate Protective Packaging Decision Matrix
Engineering breakdown comparing small (10mm/4mm) vs. large (25mm/12.7mm) bubble wrap for B2B damage reduction and B2C dimensional shipping cost control.
Packaging advice, not a sales desk
Ask about materials, sizing and specifications. Prices and volume tiers are in the matrix above.










