Description
Our extra large paper mailing bag pack of 20 contains twenty 120gsm kraft paper mailing bags, each 570 x 450mm with a 100mm gusset and a 95mm flap. Two peel-and-seal strips let your customer reuse the bag for a return, and a tear strip makes opening easy.
Same bag, other pack sizes: pack of 50. A paper mailing bag is lighter and flatter than a box, which usually keeps postage down for clothing and soft goods.

Extra large paper mailing bag pack of 20: specifications
| Size | 570 x 450mm + 95mm flap |
|---|---|
| Gusset | 100mm |
| Fits | Coats, bulky knitwear, bedding |
| Paper | 120gsm kraft |
| Closure | 2 peel-and-seal strips (second for returns) |
| Opening | Tear strip |
| Pack quantity | 20 |
| Royal Mail | Royal Mail Medium Parcel (over the 450mm Small Parcel limit) |
Good for: Jumpers, coats, bedding and other bulky soft goods.
Which paper mailing bag size do I need?
Fold the item as you will post it, then pick a bag at least 20mm longer and wider; the gusset takes the thickness. Sizes in stock:
- A5 mailing bag: 229 x 162 x 40mm
- Paper mailer bag: 190 x 300 x 50mm
- Large letter mailing bag: 250 x 353 x 50mm
- A4 postage bag: 350 x 250 x 50mm
- Paper mailing bag for clothes: 255 x 415 x 75mm, 2-ply
- A3 postage bag: 450 x 350 x 80mm
- A3 mailing bag: 450 x 350 x 120mm
- Large paper mailing bag: 500 x 400mm
- Extra large paper mailing bag: 570 x 450 x 100mm
Compare every size in paper mailing bags.
Buying for a business, school or production?
We supply Vinted, Depop, eBay and Etsy sellers, small clothing brands, theatres and schools. If you post with this size regularly, contact us to ask about trade pricing.
Extra large paper mailing bag pack of 20 FAQs
What fits?
Coats, bulky knitwear, bedding and other large soft goods.
How do returns work?
Open along the tear strip; your customer reseals the bag with the second peel-and-seal strip.
How does it post?
Royal Mail Medium Parcel (over the 450mm Small Parcel limit).










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