Grey Mailing Bags 21x24" (533x610mm) for large parcels
The 21x24" grey mailing bags are a reliable choice for shipping large parcels, bulky apparel, or retail products that need durable and lightweight protection. These bags combine strength and practicality, helping online retailers, couriers, and eCommerce sellers ensure their goods reach customers safely and in perfect condition.
Perfect for Large and Bulky Parcels
Whether you’re sending coats, shoes, fabric rolls, or multiple smaller boxes together, these mailing bags provide ample space and strength. Their generous 533x610mm size makes them ideal for packing larger or odd-shaped products that don’t fit standard parcel sizes.
Durable, Waterproof, and Tear-Resistant
Made from premium-grade LDPE polythene, these bags offer impressive tear resistance and protect against rain, spills, and rough handling during transit. The material’s flexibility allows it to conform to the shape of your products, minimizing wasted space while maintaining protection.
Each bag features a strong self-adhesive strip for secure sealing, ensuring parcels remain tamper-proof from dispatch to delivery. Once sealed, they cannot be opened without clear evidence of tampering, offering peace of mind to both sender and recipient.
Lightweight and Cost-Effective
Unlike cardboard boxes, grey mailing bags add virtually no extra weight to your parcel, helping reduce overall postage costs. This makes them especially useful for online retailers who dispatch a large number of orders daily. The bags’ sleek finish also gives parcels a professional, tidy appearance without the need for extra outer packaging.
Eco-Friendly and Recyclable
These grey mailing bags are made from recyclable polythene, making them an environmentally responsible option. Many businesses choose these mailing bags as a sustainable alternative to traditional packaging, helping reduce waste while maintaining strength and performance. They can be easily recycled through most local recycling programs.
Popular Uses
- Shipping bulky clothing, outerwear, and textiles
- Sending retail parcels or multiple small boxes together
- Courier packaging for large orders
- Postage for eCommerce and subscription box services
- Storage or returns packaging
Why Experts Prefer to Buy from Storage & Removal Boxes
Industry experts often recommend buying packaging supplies from Storage & Removal Boxes because of our consistent quality, competitive pricing, and reliable UK-wide delivery. We supply packaging materials that professionals actually use — from cardboard boxes to bubble wrap and durable mailing bags like these. Our focus is on practicality and protection, ensuring every product meets real-world shipping standards.
Each batch of our grey mailing bags is tested for durability and adhesive performance, giving you confidence that your parcels will withstand the demands of courier and postal networks. We also offer bulk-buy discounts for regular shippers and small businesses looking to cut costs without compromising on quality.
Buying in Bulk?
For eCommerce sellers, courier services, or retail stores dispatching multiple parcels daily, bulk ordering these 21x24" mailing bags offers excellent value. Buying larger quantities reduces cost per unit and ensures you’re always stocked up for busy periods.
Specifications
- Size: 21x24 inches (533x610mm)
- Material: LDPE Polythene
- Colour: Opaque Grey
- Closure: Self-adhesive peel-and-seal strip
- Thickness: Approx. 50–55 microns
- Recyclable: Yes
Tips for Best Use
- Ensure items are placed neatly inside to maintain parcel shape.
- Seal firmly along the adhesive strip for a tamper-evident closure.
- Use additional inner padding such as bubble wrap for fragile items.
- Label clearly on the smooth outer surface for easy scanning.
Trusted Across the UK
From small eCommerce startups to established online retailers, our customers across the UK trust Storage & Removal Boxes for durable, dependable packaging. Whether shipping from London, Manchester, Birmingham, or Glasgow, you can rely on our fast dispatch and professional-quality supplies.
Order Your Grey Mailing Bags Today
Make packaging simpler and more efficient with these strong, weatherproof 21x24" grey mailing bags. They offer the ideal combination of protection, presentation, and affordability — making them one of the most popular choices among UK online retailers.
Order online today from Storage & Removal Boxes and experience packaging that performs as promised — durable, cost-effective, and ready for anything the delivery process throws at it.
