Eco-Friendly Grey Mailing Bags

Looking for reliable and affordable grey mailing bags for your business? Our premium quality grey plastic mailing bags offer the perfect solution for sending parcels securely. Whether you're posting clothes, documents, or small items, these self-sealing bags are made to keep your contents safe and dry.

Mr Bags’ Grey Mailing Bags is the ultimate shipping solution that combines affordability, durability, and eco-friendliness! Whether you’re a small business owner shipping products or sending personal parcels, our high-quality polythene mailing bags are designed to keep your items safe, secure, and looking professional.

Where to Buy Grey Mailing Bags

Starting at just 0.01p per bag, Mr Bags is proud to be the cheapest mailing bag supplier in the UK, offering unbeatable value without compromising on quality. Plus, with 14 sizes to choose from including Grey Mailing Bags 12" x 16, we’ve got the perfect fit for everything from delicate jewellery to bulky clothing.

But that’s not all – our grey mail bags are eco-friendly and recyclable, making them the smart choice for environmentally conscious shoppers. Ready to upgrade your packaging game? Let’s dive into what makes our grey mailing bags a must-have for your shipping needs!

Grey Parcel Bags Size Guide

No matter what you’re shipping, we’ve got the perfect size for you! From compact 4.5x7 inch (11.4 x 17.7 cm) bags for jewellery and documents to large 28x34 inch (71.1 x 86.4 cm) mailers for bulky items, our 14-size range ensures there’s a grey mailing bag for every need. Whether you’re running an e-commerce business or sending personal parcels, you’ll find the ideal fit to keep your items safe and secure.

These grey parcel bags are a go-to choice for fashion brands, fulfilment centres, and postal services. Use them as grey mailing bags for clothes, books, accessories, or lightweight goods. They're light enough to save on postage yet tough enough to handle the demands of delivery networks like Royal Mail and couriers nationwide. Explore our sizes below and choose the one that works best for you!

Durable Grey Postage Bags

Choose grey postage bags when you want simple, no-fuss packaging that protects your items and gives a tidy, professional finish. The neutral grey colour hides contents and is ideal for brands that want to keep packaging minimal or consistent with other coloured mailing bags. These plastic postage bags are tear-resistant and built for daily use. 

These are more reasons why you should choose our grey plastic postage bags:

Eco-Friendly and Durable Grey Poly Mailers

Our grey postage bags are built to handle the roughest journeys while staying kind to the planet. Made from recyclable polythene, they’re the eco-warrior your packaging needs – without the hefty price tag!

Lightweight polythene mailers

Don’t let their lightweight design fool you – these packaging bags for shipping are built to last. They’ll shield your items from moisture, dust, and even the occasional shipping mishap, all while keeping your costs down.

Plastic postage bags in all Sizes

From tiny jewellery pouches to large clothing mailers, our 14-size range has you covered. No more struggling to fit odd-shaped items – we’ve got the perfect bag for every need.

Cheap Grey Postal Bags and Fast Delivery

Why pay more when you can get premium quality at unbeatable prices? Starting at just 0.01p per bag, our mailing bags are the secret weapon for budget-savvy businesses and savvy shoppers alike.

Grey Mailing Bags Wholesale

Running a busy online shop or handling high-volume dispatches? We offer unbeatable deals on grey mailing bags wholesale. Buy in bulk and save with our cost-effective multi-packs – perfect for businesses that ship daily. Whether you need small parcel bags, grey mailing bags large, or something in between, we've got the sizes and quantities to meet your needs.

• Packs of 100, 200, 300, 400, 500, or 1,000+ grey mailing bags
• Mixed-size grey mailing bags available for businesses with varied shipping needs 
  

What Makes Us Different?

✅ Eco-Friendly Without the Fuss: Recyclable and energy-efficient to produce.
✅ Built for Business: Trusted by e-commerce sellers across the UK.
✅ Fast & Free Delivery: Orders over £30 get next-day delivery – on us!

Mr Bags Promise:

🌟 Pack Smarter, Ship Better
We’re not just selling mailing bags – we’re delivering peace of mind. With our grey mailing bags, you’ll never have to worry about damaged goods, unhappy customers, or overspending on packaging again.

🌍 Eco-Friendly Packaging That Actually Works
Feel good about your shipping choices! Our bags are designed to be kind to the planet without sacrificing performance. Because protecting your items and the environment shouldn’t be a compromise.

💼 Your Secret Weapon for E-Commerce Success
Whether you’re shipping clothing, jewellery, or documents, our mailing bags are the ultimate packaging partner for your business. Lightweight, durable, and affordable – they’re everything you need to keep your customers smiling and your costs low.

Ready to Upgrade Your Packaging?

Don’t settle for less when you can have the best. Join thousands of happy customers who trust Mr Bags for their shipping needs.

✨ Shop Now and Enjoy:

• Prices from just 0.01p per bag – the cheapest in the UK!

• 14 sizes to fit every parcel perfectly.

• Free next-day delivery on orders over £100.

Why Customers Love Mr Bags:

⭐️⭐️⭐️⭐️⭐️
"Finally found a supplier that doesn’t break the bank! The bags are super durable, and I love that they’re eco-friendly too." – Sarah, E-Commerce Seller

⭐️⭐️⭐️⭐️⭐️
"Perfect for my small business. The variety of sizes means I never have to waste a bag, and the free delivery is a game-changer!" – James, Online Retailer

⭐️⭐️⭐️⭐️⭐️
"I was sceptical about the price, but the quality is amazing. My items arrive in perfect condition every time!" – Emily, Handmade Jewellery Seller.

FAQs

1. Where to Buy Mailing Bags in the UK?

🚨 Warning for Amazon & eBay Sellers:
While Amazon and eBay listings may appear cheap, hidden fees (Amazon referral fees 8-15%, eBay final value fees 10-12%, FBA storage costs) mean sellers inflate prices to compensate—making them not truly the cheapest.

✅ Why Mr Bags is the Smarter Choice:

• 💰 Cheapest Prices – No middleman fees = direct wholesale rates

• 🚚 Next-Day Delivery – Reliable UK-based supplier

• 🔄 Always in Stock – No risk of Amazon/eBay stockouts

• 📦 Bulk Discounts – Better savings at 500+ units

👉 For the best deal, skip Amazon/eBay mark-up—go straight to the source: [Mr Bags].

(Need a custom quote? Contact us for unbeatable bulk pricing!)

2. What Size Mailing Bag Fits Royal Mail Large Letter?

A Royal Mail Large Letter can fit inside a mailing bag with dimensions up to 353mm x 250mm x 25mm. The best mailing bag size for sending items as a Royal Mail Large Letter is typically 9 x 12 inch (22.9cm x 30.5cm) and 10×14 Inches (25.4×35.6cm). Here is a breakdown:

Royal Mail Large Letter Size Limits:

• Max Dimensions: 35.3cm (L) x 25cm (W) x 2.5cm (D)

• Max Weight: 750g

• Key Rule: If your package exceeds 2.5cm thickness, it becomes a "Small Parcel" (costs more!).

Best Mailing Bag Sizes for Royal Mail Large Letter

Option 1: 9×12 Inches (22.9×30.5cm)

✔ Fits snugly within Large Letter limits
✔ Ideal for: A4 documents, thin clothing, books
✔ Best for: Minimizing postage costs

Option 2: 10×14 Inches (25.4×35.6cm)

⚠ Slightly over width (25.4cm vs. Royal Mail’s 25cm max)
✔ Still usable if underfilled (bag compresses to fit)
✔ Better for bulkier items (but risk Small Parcel upgrade)

Which Should You Choose?

Mr Bags Recommendation:

• Stick with 9×12" (22.9×30.5cm) for guaranteed Large Letter pricing.

• Need flexibility? 10×14" can work if under 2.5cm thick when packed.

(Pro Tip: Use a rigid envelope for extra protection without adding bulk!)

Want a custom size recommendation for your products? Ask us!

3. Is It Cheaper to Mail Bags or Boxes?

Mailing bags are generally much cheaper than boxes, especially for lightweight and non-fragile items. Mailing bags or Postage bags take less space and are lighter, which lowers the postal costs. However, mailing boxes can help protect your items and carry heavier weight.

Here’s the real cost breakdown for UK sellers:

📦 Mailing Bags vs. Boxes: Cost Comparison

Key Takeaways:

1. Bags are 50–80% cheaper for small, non-fragile items (e.g., clothing, books).

2. Boxes only make sense for heavy/fragile goods (e.g., ceramics, electronics).

3. Large Letter vs. Small Parcel? A 500g item in a bag often costs £1.20 (Large Letter), while the same in a box jumps to £2.85+ (Small Parcel).

When to Use Each?

✔ Use Mailing Bags If:

• Your item is under 2.5cm thick and ≤750g.

• You sell soft goods (apparel, accessories, paper products).

• Every penny counts (e.g., eBay/Amazon low-margin items).

✔ Use Boxes If:

• Your product is fragile or rigid (glass, tech, ceramics).

• You need branded unboxing experiences.

• It won’t fit Royal Mail’s Large Letter dimensions.

Still have questions? Don’t worry – we’re here to help!

📞 Call Us:
0151 227 1854 (Office)
07450 981838 (Mobile / WhatsApp)

📧 Email:
info@mrbags.co.uk (We reply within 1 business day)

💬 Prefer WhatsApp chat?
WhatsApp us for instant support during business hours.

No question is too small – our packaging experts are happy to advise!