Product Overview
Grey plastic postage bags are high-performance packaging solutions specifically designed for the modern e-commerce, logistics, and retail sectors. Crafted from high-quality polyethylene (PE) or biodegradable biomaterials, they offer exceptional resistance to water, dust, and tearing. Their elegant grey exterior is not only professional and aesthetically pleasing but also effectively conceals the contents within-thereby enhancing privacy protection-while serving as an ideal canvas for custom brand printing.
Features of grey plastic postage bags
Comes with a permanent self-sealing flap and is made of lightweight, super-strong, robust, adaptable, and waterproof 50micron (200gauge) polythene.
Multipacks of Strong Grey Mail Postage Bags in sizes ranging from Small to Large (25/50/100/300/500/1000).
These are created from an opaque, grey 60Mu film that adheres to the envelope lip with a strong self-adhesive seal. Your items will be untouched by this excellent closing, which seals exceptionally securely to keep out the damp, debris, and even air.
Security: Self-Seal
The 60 Micron thick construction is resistant to tearing or ripping, making these extremely difficult to tamper with, ensuring that your things arrive in perfect condition.
These plastic postage bags are perfect for use with any courier or for airtight storage of products, whether for personal or business purposes.
High-quality warranty from a reputable UK store; we will gladly assist you with any questions or concerns you may have about this product!
It's made of virgin polyethylene. Our polyethylene mailing bags are extremely tough and resistant to tears, punctures, and dampness. Waterproof and abrasion-resistant. Protect your items from loss with explosion-proof edges and powerful stickiness.
Damage is impossible due to the self-sealing and safe-strong adhesive. The mailing bag cannot be resealed or opened after it has been sealed, and there will be no visible damage to the mailing bag.

Products Function
Secure Transport: Provides reliable external protection for non-fragile items such as clothing, textiles, books, and small electronic devices.
Brand Marketing: Utilizes a large printable surface area to showcase logos, promotional messages, or social media handles.
Anti-Counterfeiting & Tamper-Proofing: Features a single-use seal design that cannot be restored once opened, effectively preventing product swapping or tampering.
Categorization & Management: Allows for the differentiation of order types, priorities, or destinations through the use of distinct colors or printed markings.
Eco-Friendly Disposal: The biodegradable variant fully decomposes into carbon dioxide and water under industrial composting conditions, leaving behind no microplastic residue.

Application of grey plastic postage bags
Application Scenarios
E-commerce: The preferred choice for shipping clothing, footwear, accessories, home goods, and other online store merchandise.
Logistics & Delivery: Standard packaging for parcels handled by express carriers and Third-Party Logistics (3PL) providers.
Retail & Wholesale: Replenishment for brick-and-mortar stores and merchandise transit within wholesale markets.
Documents & Records: Waterproof mailing for important documents, contracts, and invoices.
Subscription Services: Monthly subscription boxes, product samples, and membership gift packages.
Cross-border E-commerce: Lightweight parcels compliant with International Air Transport Association (IATA) regulations.
Sizes & Thicknes(Customizable Size and thicknes)
| Size (Inches) | Size (cm) | Recommended Use | Thickness (micron) |
|---|---|---|---|
| 6" x 9" | 15 x 23 cm | Jewelry, small accessories, cosmetics, phone cases | 20-40 μm |
| 9" x 12" | 23 x 30 cm | T-shirts, shirts, books, small electronics | 30-50 μm |
| 10" x 13" | 25 x 33 cm | Hoodies, jeans, multi-item bundles | 40 - 60 μm |
| 12" x 15" | 30 x 38 cm | Coats, blankets, larger volume items | 50- 70 μm |
| 14" x 17" | 35 x 43 cm | Winter wear, home textiles, mixed bulk items | 60-80 μm |
| 19" x 24" | 48 x 61 cm | Large garments, toys, bulk shipments | 80 - 100 μm |
| Custom Size | Custom Size | Special shapes or oversized items | 100 - 125 μm |

Service Content:
| OEM and ODM services | The company provides OEM and ODM services to meet the diverse needs of different customers |
| Production using recycled materials | Many of our products contain at least 30% recycled content, avoiding the additional cost pressures of increased taxes on imported plastic packaging. |
| Certificate | ISO14001, ISO9001, SGS-REACH, SGS-LDPE polyethylene bag (30% recycled material), USB TEXT5873-GRS-2022-01 |
| Packaging method | Boxed, bagged, custom packaging |
| Delivery time | Usually about 35 days after receiving advance payment and confirming all details |
| Sample/supply quantity | 3-7 days. Some of our samples are free, and some are chargeable. Can supply more than 50 containers per month |
| Minimum order quantity | According to specifications, between 100kgs-1000kgs |
| Price | Depends on size, thickness, packaging and printing |
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