Grey Mailing Bags 17x24 Inch (432 x 610 mm) – Postage Bags, Packs of 25 to 2000 – Strong Self-Seal Parcel Bags

Grey mailing bags 17 x 24 inch (432 x 610 mm) – strong, self-seal postage bags for posting clothes and soft goods safely across the UK. Available in packs of 25, 50, 100, 500, 1000 and 2000, these grey poly mailers are the everyday choice for Vinted, eBay, Etsy and Depop sellers, online shops and small businesses. Free UK delivery on every order.

What fits in a 17 x 24" grey postage bag?

This large mailing bag is ideal for bulky coats, bedding, cushion covers, soft toys and large clothing orders.

Why choose iSOUL grey mailing bags?

• Strong 55 micron co-extruded polythene – two layers fused together for a tough, tear-resistant bag.
• Peel-and-seal closure – no tape needed; the permanent strip makes every parcel tamper-evident.
• Fully opaque – contents stay private.
• Water and dirt resistant – protects items from rain and grime in transit.
• Lightweight – keeps postage costs lower than boxes.
• Works with every courier – Royal Mail, Evri, DPD, Yodel, InPost and Vinted drop-off points.

Specifications

Frequently asked questions

What fits in a 17 x 24 inch mailing bag?
The 17 x 24" (432 x 610 mm) bag is ideal for bulky coats, bedding, cushion covers, soft toys and large clothing orders. Measure your item when folded and allow about 2–3 cm extra each way so the self-seal strip closes flat.

What's the difference between mailing bags, postage bags and parcel bags?
Nothing – mailing bags, postage bags, postal bags, parcel bags and poly mailers are all names for the same self-seal plastic bags used to post items.

Which pack size should I buy?
Small sellers and Vinted users usually start with a 25 or 50 pack. If you post every day, the bigger packs bring the price per bag right down.

Are the bags see-through or reusable?
No – they're fully opaque so nobody can see what's inside. The permanent adhesive strip can't be reopened without tearing, so parcels are tamper-evident.

Is delivery free?
Yes – UK delivery is free on every order, with no minimum spend.

Need a bigger quantity? Call or WhatsApp +44 7418 098951 for a bulk discount. See every size and pack in our grey mailing bags range, or browse all mailing and postage bags.