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500 x Grey Mailing Bags – 16x21" (406x533mm)

Send bulky or oversized parcels securely with our 16x21 inch heavy-duty grey mailing bags. Designed for strength, waterproof protection, and reliable performance, these large grey mailers are perfect for eCommerce, postal, and courier shipments. A trusted choice for UK retailers and home movers alike.
£59.95
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16x21 Inch Heavy Duty Grey Mailing Bags – Extra Large Waterproof Parcel Mailers

When you’re sending larger or bulkier parcels, the 16x21 inch grey mailing bags from Storage & Removal Boxes offer a perfect balance of durability, weather resistance, and cost efficiency. These extra large grey poly mailers are crafted from premium-quality polyethylene that’s both tear-resistant and waterproof, ensuring your packages arrive safely every time.

Designed for Secure and Professional Shipping

Our XL grey mailing bags are ideal for online retailers, warehouse dispatch operations, and individuals who want reliable protection for their shipments. The self-seal adhesive strip creates a strong, tamper-evident closure that keeps contents safe throughout transit. The matte grey finish gives your parcels a clean, professional look while maintaining privacy.

  • Size: 16x21 inches (406x533mm) – suitable for large clothing items, soft furnishings, or boxed goods
  • Manufactured from tough, 55–60 micron recyclable plastic
  • Waterproof, lightweight, and puncture-resistant
  • Self-seal adhesive strip for fast and secure packing
  • Opaque grey colour ensures product confidentiality

Perfect for Online Retailers, Couriers, and Home Movers

Whether you’re running an eCommerce business or simply sending items to friends and family, these large grey mailing bags offer the dependable quality you need. They’re widely used by clothing retailers, marketplace sellers, and removal companies that require a lightweight yet tough packaging solution.

The bags’ flexibility makes them easy to store in bulk and ideal for packing everything from apparel and accessories to home textiles and soft goods. Their waterproof design also helps protect against rain or accidental spills during transit.

Eco-Friendly and Cost-Effective Shipping

Made from recyclable LDPE material, our grey mailing bags provide an environmentally conscious choice without compromising on performance. They’re also lightweight, which helps reduce shipping costs — a key advantage for businesses shipping high volumes of parcels daily.

Why Experts Prefer to Buy from Storage & Removal Boxes

Professionals across the UK trust Storage & Removal Boxes for our consistent quality, competitive prices, and fast nationwide delivery. Each mailing bag is sourced to meet the needs of retailers and movers who value strength, reliability, and efficiency in their packaging materials.

We stock a complete range of grey mailing bags in multiple sizes, ensuring you can find the perfect fit for every product. Our commitment to quality means you can buy with confidence, knowing your parcels are well-protected from start to finish.

Key Applications

  • Shipping large clothing items, textiles, and accessories
  • Courier and postal deliveries
  • Warehouse and fulfilment operations
  • Storage and relocation use

Order Your 16x21 Inch Grey Mailing Bags Today

Get dependable protection for your parcels with our extra large grey mailing bags. Order online from Storage & Removal Boxes and enjoy fast, reliable delivery anywhere in the UK.