Professional A4 Shipping Solutions – 9 x 12″ Grey Mailing Bags (Pack of 200)
Upgrade your dispatch workflow with our premium 9″ x 12″ (225x300mm) Grey Mailing Bags. Specifically designed to meet Royal Mail Large Letter guidelines, these bags are the gold standard for e-commerce sellers looking to combine professional presentation with maximum postage savings.
Why Choose Packaging365 Bulk Packs?
- Maximize Your Margins: By purchasing in packs of 50 or 100, you reduce your cost-per-shipment. These bags are perfectly sized for A4 documents, t-shirts, and thin books, allowing you to ship as a ‘Large Letter’ rather than a ‘Small Parcel.’
- Professional & Opaque: Featuring a dark inner lining, these bags provide 100% opacity. Your customers won’t see what’s inside, ensuring total privacy and a professional “brand-new” look upon arrival.
- Ultra-Strong Protection: Manufactured from high-density, co-extruded polymer, our bags are puncture-resistant and waterproof. Whether it’s rain or rough handling, your items stay bone-dry and intact.
- Tamper-Proof Seal: Our “all-season” permanent self-seal adhesive strip creates a bond so strong it cannot be opened without leaving visible signs of tampering. Once it’s sealed, it stays sealed.
Perfect For:
- Apparel: T-shirts, leggings, and baby clothes.
- Media: Books, magazines, and A4-sized brochures.
- High-Volume Sellers: Ideal for busy eBay, Vinted, and Etsy stores.
Need more than one size? See our Mixed Size Packs.
Technical Specifications:
- Size: 9 x 12 inches (225mm x 300mm approx)
- Quantity: Available in 50 or 100 Packs
- Material: 100% Recyclable LDPE (60 Micron thickness)
- Closure: Permanent Self-Seal Strip
- Color: Professional Opaque Grey
The Packaging365 Guarantee: Join over 5,000 UK resellers who trust us for their supplies. Order before 1 PM for same-day dispatch and take advantage of our wholesale rates on every order!
Reviews
There are no reviews yet.