Strong Grey Mailing Bags & Postal Bags – 60 µm Recycled LDPE Heavy-Duty Self-Seal
Grey Mailing Bags – 14 Sizes, Self-Seal, Recycled LDPE Postal Bags for E-commerce Shipping
Regular price £4+
Grey Mailing Bags Assorted Pack – 120 Mixed (4.5x7 ″ to 13×19″) – Strong 60 µm Self-Seal Postal Bags for e-commerce Shipping
Regular price £9.99
Grey Mailing Bags 12×16" (305×406 mm) – Self-Seal Recycled Postal Bags
Regular price £7+
Grey Mailing Bags 13×19" (330×483 mm) – Self-Seal Recycled Postal Bags
Regular price £7+
Grey Mailing Bags 17×24" (432×610 mm) – Self-Seal Recycled Postal Bags
Regular price £12+
Grey Mailing Bags 9×12" (229×305 mm) – Self-Seal Recycled Postal Bags
Regular price £5+
Grey Mailing Bags 10×14" (254×355 mm) – Self-Seal Recycled Postal Bags
Regular price £7+
Grey Mailing Bags 21×24" (533×610 mm) – Self-Seal Recycled Postal Bags
Regular price £15+
Grey Mailing Bags 15×18" (381×457 mm) – Self-Seal Recycled Postal Bags
Regular price £8+
Grey Mailing Bags 14×21" (356×533 mm) – Self-Seal Recycled Postal Bags
Regular price £9+
Grey Mailing Bags 6.5×9" (165×229 mm) – Self-Seal Recycled Postal Bags
Regular price £5+
Grey Mailing Bags 24×36" (610×914 mm) – Self-Seal Recycled Postal Bags
Regular price £28+
Grey Mailing Bags 20×26" (508×660 mm) – Self-Seal Recycled Postal Bags
Regular price £16+
Grey Mailing Bags 4.5×7" (114×178 mm) – Self-Seal Recycled Postal Bags
Regular price £4+
Grey Mailing Bags 28×34" (711×864 mm) – Self-Seal Postal Bags
Regular price £35+
Grey Mailing Bags 28×30" (711×762 mm) – Self-Seal Recycled Postal Bags
Regular price £25+
Why Choose Grey Mailing Bags
Grey mailing bags remain the most practical choice for professional e-commerce and warehouse dispatch. Their neutral colour, durable 60 µm recycled LDPE film and tamper-evident self-seal make them the dependable solution for parcels of all sizes. The moisture-proof, opaque finish protects goods in transit and keeps customer data private. Whether sending apparel, accessories, or light parcels, these heavy-duty postal bags deliver a clean, secure impression every time.
Built for E-Commerce Dispatch & Fulfilment
Designed with online retailers in mind, our grey mailing bags are ideal for eBay, Amazon, Etsy and independent store orders. The self-seal adhesive strip speeds up packing, while the lightweight LDPE reduces shipping costs. Their consistent quality helps fulfilment centres, subscription brands and couriers maintain an efficient workflow with minimal waste or damage claims. Combine strength, speed and presentation in every shipment.
How to Select the Right Size & Thickness
Choosing the correct mailing bag size ensures protection and presentation. Measure your parcel’s longest side and thickness, then allow extra space for a secure fold and seal. Our 60 µm film is ideal for standard clothing and light parcels, offering toughness without excess weight. For bulkier or boxed goods, opt for larger sizes (17×22" to 28×34"). You can download our full size chart (PDF) for quick reference.
Pair with Other Packaging Essentials
Complete your packaging setup with compatible essentials from Mr Bags:
- Packaging Tape – strong adhesive for parcel sealing.
- Cardboard Boxes – double-wall and single-wall boxes for heavier items.
- Paper Bags with Handles – retail and gift presentation.
- Clear Garment Bags – ideal for clothing protection inside parcels.
Need coloured packaging for customer branding or boutique deliveries? Explore our Coloured Postage Bags range, featuring Green, Blue, Pink, and Purple options.
Trade Supply & Sustainability Promise
All grey mailing bags are made from 100% recycled LDPE (code 4) and are recyclable through soft plastic collection points. Mr Bags supports UK recycling schemes and supplies all products from UK stock for same-day dispatch before 3 pm. We provide bulk discounts, VAT invoices, and trade account options for regular buyers and fulfilment partners.
Trust Mr Bags for reliable, moisture-proof delivery packaging – the strong grey mailing bag that works as hard as your business does.
Grey Mailing Bags – Common Questions & Useful Buying Guide
Find answers about grey mailing bags – recycling, sizing, water resistance and bulk supply. Learn how to choose the right heavy-duty postal bag for your business.
Yes. All of our grey mailing bags are made from 100% recycled LDPE (code 4) and can be recycled again through soft-plastic collection points. Most UK supermarkets and waste centres accept these materials. For details, visit Recycle Now. Always remove any address labels before recycling to ensure clean recovery.
Our grey mailing bags are made from 100% recycled LDPE (code 4), making them an eco-friendly choice for everyday dispatch. They are not biodegradable, but they are fully recyclable through soft-plastic collection points and use post-consumer recycled material, reducing new plastic waste. This balance ensures strength, reusability and responsible production for sustainable packaging.
Our grey postal bags use 60 µm thick recycled LDPE film – a flexible, moisture-proof plastic ideal for courier parcels. They are fully opaque for privacy, resistant to tears and punctures, and designed with a self-seal adhesive strip for quick, tamper-evident closure.
Pick the smallest bag that fits your item with a little room to fold and seal. Use these quick links (sizes shown as inch and mm):
- 9×12" (229×305 mm) – small accessories, tees, books.
- 10×14" (254×355 mm) – T-shirts, light clothing, small parcels.
- 12×16" (305×406 mm) – jeans, jumpers, folded outfits.
- 15×18" (381×457 mm) – hoodies, bulkier clothing, multiple items.
- 17×24" (432×610 mm) – bundles, shoe boxes, padded items.
- 28×34" (711×864 mm) – extra-large parcels, boxed goods.
Note: Sizes are approximate internal measurements. If in doubt, size up for a clean fold and secure self-seal.
Our grey mailing bags are moisture-proof and water-resistant, keeping parcels dry during courier handling and rain exposure. While not designed for full submersion, their sealed LDPE film effectively repels water, helping your goods arrive in perfect condition.
Yes. Mr Bags offers bulk and wholesale packs of 100 to 400 units, plus value mixed assortments. We support trade buyers and fulfilment centres with quantity discounts, VAT invoices, and same-day dispatch before 3 pm from UK stock. Contact our team for customised pricing or pallet quantities.
Absolutely. Our grey poly mailers are ideal for clothing items such as T-shirts, jeans, jumpers and outerwear. The smooth inner film prevents snagging on fabrics, while the self-seal closure speeds up packing for fashion retailers and eBay sellers. Choose a size that fits snugly to avoid excess creasing.
In most cases, no. The 60 µm heavy-duty LDPE film provides enough protection for soft goods and boxed items. For fragile or sharp-edged products, simply reinforce with packaging tape or add a cardboard box inside for extra rigidity.
Use adhesive courier or thermal labels – they stick securely to the matte LDPE surface of our grey mailing bags. For thermal printers, ensure the surface is clean and dry. Avoid paper tape over barcodes to prevent scanning issues during courier processing.
Yes. While our stocked grey mailing bags are supplied plain, custom-printed options are available for bulk orders. We can produce branded mailing bags with your logo, colour or design to enhance customer presentation. For custom sizes or print quotes, please contact our trade team with your artwork or branding requirements.