Premium Grey Poly Mailing Bags | Strong, Waterproof & Lightweight

Built from high-grade polyethene, our grey poly mailers offer superior strength, waterproof protection and a clean professional finish, at a fraction of the cost of cardboard boxes. Lightweight enough to keep postage costs down. Tough enough to survive the courier network.

Key Features

1. Permanent self-seal adhesive- no tape needed
2. 100% waterproof outer layer
3. Tear-resistant high-grade polyethene
4. Opaque grey finish for complete privacy
5.  Lightweight- reduces postage costs
6. BPA-free material

Available Sizes

Perfect For Shipping

Clothing · Books · Cosmetics · Gifts · Accessories · Homeware

Compatible With

Royal Mail · DPD · Evri · Yodel · DHL · Royal Mail Click & Drop · eBay · Etsy · Amazon · Shopify · Vinted · Depop

Specifications

1. Material: High-density polyethene (HDPE)
2. Colour: Opaque matte grey
3. Closure: Permanent peel-and-seal adhesive strip
4. Waterproof: Yes
5. Tear resistant: Yes
6. Available: Individual packs & bulk quantities

FAQs

Are these waterproof?
Yes — fully waterproof from dispatch to doorstep.

Can they fit through a letterbox?
The 6.5x9" and 9x12" sizes can, depending on the contents' thickness. Always verify against Royal Mail's large letter dimensions.

Can I buy in bulk?
Yes — bulk pricing available. Contact us for trade orders. Same-day dispatch on orders placed before 2 pm weekdays.