Grey Mailing Bags & Parcel Bags – 6 Sizes (6x9 to 17x24 inch), Packs of 100 to 1000 – Self-Seal Postage Bags

£3.99

Size: 6" x 9" (152mm to 229mm)
Bulk Buy: 25 Pieces Pack
Increase must be a multiple of 1 Only 0 left in stock. Please reduce your quantity. Only 10 left in stock. Please reduce your quantity.

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Product Description

iSOUL Grey Mailing Bags and Parcel Bags – strong, opaque, self-seal postage bags in 6 sizes, sold in packs of 100, 200, 500 and 1000. Whether you call them mailing bags, parcel bags, postal bags or plastic mailers, these are made from tough 60 micron polythene with a bright Grey outside and black inner lining, keeping contents private and protected from rain and dirt. Popular with Vinted, eBay, Etsy and Depop sellers, boutiques and online shops across the UK. Free UK delivery on every order.

Size guide – which parcel bag do I need?

Size (inches) Size (mm) Best for
6 x 9" 152 x 229 mm Jewellery, accessories, socks, small items
9 x 12" 229 x 305 mm T-shirts, tops, books, A4 documents
10 x 14" 254 x 356 mm Dresses, jeans, folded clothing
12 x 16" 305 x 407 mm Jumpers, hoodies, cardigans
14 x 19" 356 x 483 mm Coats, jackets, several items together
17 x 24" 432 x 610 mm Bulky clothing, bedding, larger orders

Why sellers choose iSOUL Grey parcel bags

  • Strong 60 micron film: thick enough to resist tearing in transit, yet light to keep postage costs down.
  • Permanent self-seal strip: peel and press – no tape needed. Once sealed, the parcel bag can't be opened without tearing, so parcels are tamper-evident.
  • Fully opaque: Grey outside, black inner lining, so nobody can see what's inside.
  • Water and dirt-resistant: protects items from rain and grime during delivery.
  • Perfect parcel bags for clothes: ideal for posting clothing, shoes in soft packaging, accessories and other soft goods that don't need a box.
  • Eye-catching colour: bright Grey parcels stand out and look more professional and memorable than plain grey bags.
  • Bulk packs save money: choose 100, 200, 500 or 1000 bags – the bigger the pack, the lower the cost per bag.
  • Works with all couriers: Royal Mail, Evri, DPD, Yodel, InPost and Vinted drop-off points.

Frequently asked questions

What's the difference between mailing bags and parcel bags?
None – they're the same thing. Mailing bags, parcel bags, postage bags, postal bags, and poly mailers are all names for self-seal plastic bags used to post items.

What size parcel bag do I need for Vinted?
Most Vinted sellers use 10 x 14" for everyday clothing like dresses and jeans, 9 x 12" for T-shirts and tops, and 12 x 16" or larger for jumpers and coats.

Are these parcel bags good for posting clothes?
Yes. Clothing is what most of our customers post in them – they're strong, light, and keep garments clean and dry.

Can I send these as a Royal Mail Large Letter?
The 6 x 9" and 9 x 12" bags can be used, as long as the packed parcel stays within Royal Mail's Large Letter limits (353 x 250 x 25 mm, up to 750 g). Please check Royal Mail's current size rules before posting.

Are the bags see-through?
No. They're fully opaque with a black inner layer, so contents stay private.

Can I reopen and reseal them?
No. The seal is permanent for security, which keeps your parcel tamper-evident.

Are they waterproof?
They're water-resistant and protect contents from rain and dirt in transit.

Can I write on them or use labels?
Yes. Shipping labels stick well, and you can write on them with a permanent marker.

Is delivery free?
Yes, UK delivery is free on all orders, with no minimum spend.

Need more than 1000 parcel bags?

For bulk and trade orders, call or WhatsApp us on +44 7418 098951 for a bulk discount.

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2.5% of all sales are donated to charity.

UK-based, VAT-registered company

Trusted by customers, 3M+ items delivered

Quality Checked, Warranty Included

  • 5 stars: 288 (73%)
  • 4 stars: 109 (27%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
I
Ian Butler
Perfect for my small business

The grey shade is lovely — much more professional than the usual white or pink bags. Strong self-seal strip and waterproof material. Arrived next day too, which was a bonus.

Thank you

g
geoff haines
Strong and waterproof

These are by far the best parcel bags I've used. Thick, sturdy and the seal never fails. I send clothes and accessories regularly and not a single bag has split or leaked.

Thank you

J
John Perkins
Great self-seal bags

Really impressed with these bags. The dark grey colour is sleek and smart-looking, and the tamper-proof seal gives me real peace of mind. Great value for the quality you get.

Thank you

H
Hafsat Oyeyemi
Professional looking and sturdy

Very happy with these. The dark grey colour is much nicer than plain white and they feel genuinely substantial. Not flimsy at all. Will definitely keep buying from this seller.

Thank you

K
Kelly smith
Exactly what I needed

The grey shade is lovely — much more professional than the usual white or pink bags. Strong self-seal strip and waterproof material. Arrived next day too, which was a bonus.

Thank you

e
emma whiting
Will keep reordering these

I sell vintage clothing online and these bags are perfect. They handle irregular shapes brilliantly, the seal holds and the waterproof coating has saved more than a few items from getting wet.

Thank you

k
kieran Lightholder
Decent bags for the price

These bags do exactly what they say. Good waterproofing, decent seal and a smart grey colour. A very good buy — just a tiny bit thinner than I expected from the description.

Thank you

F
Faith Mason
Very professional appearance

Really pleased with these. The quality is excellent for the price and they arrived super fast. The grey colour looks smart and professional. Perfect for my online shop.

Thank you

J
John Overton
Grey bags are the best

Used these for sending books and they worked perfectly. No damage at all and the seal stayed firmly shut throughout. The grey looks great too — very professional.

Thank you

J
Joanne Waddington Waddington
Happy with purchase

These bags do exactly what they say. Good waterproofing, decent seal and a smart grey colour. A very good buy — just a tiny bit thinner than I expected from the description.

Thank you

G
Gillian McNeill
Sleek grey colour love it

Ordered these for my small online shop and they've been a game changer. The slate grey colour looks really professional and the waterproof material keeps everything dry. Will reorder without hesitation.

Thank you

k
kiizu burke
Decent bags for the price

These bags are really good for the price. Waterproof, decent seal and a smart grey colour. I'd give five stars but the seal on a couple of bags in my last order wasn't quite as strong.

Thank you

l
lilian swift
Best posting bags ever

These are by far the best parcel bags I've used. Thick, sturdy and the seal never fails. I send clothes and accessories regularly and not a single bag has split or leaked.

Thank you

H
Hayley Bennett
Pretty good mailing bags

Happy with my purchase. The bags are waterproof and the self-seal strip is easy to use. The grey colour is nice. I'd give five stars but some of the bags had slight creases when they arrived.

Thank you

j
julie webb
Good quality bags overall

These bags are really good for the price. Waterproof, decent seal and a smart grey colour. I'd give five stars but the seal on a couple of bags in my last order wasn't quite as strong.

Thank you

J
Julie callaghan
Good self-seal strip

These bags do exactly what they say. Good waterproofing, decent seal and a smart grey colour. A very good buy — just a tiny bit thinner than I expected from the description.

Thank you

j
julie thomas
Good quality bags overall

Pretty impressed with these. The grey colour is lovely and they feel quite sturdy. The seal is reliable. I've knocked one star because delivery took a bit longer than expected.

Thank you

A
Amy Margrie
Good value could be thicker

Happy with my purchase. The bags are waterproof and the self-seal strip is easy to use. The grey colour is nice. I'd give five stars but some of the bags had slight creases when they arrived.

Thank you

G
Geoffrey Pledger
Strong and waterproof

Really impressed with these bags. The dark grey colour is sleek and smart-looking, and the tamper-proof seal gives me real peace of mind. Great value for the quality you get.

Thank you

J
James newlands
My favourite mailing bags

These grey postal bags are superb quality. I use them for my clothing resale business and every single parcel arrives safely. The tamper-proof seal is a real selling point for my customers.

Thank you

f
family ojeyemi
Very professional appearance

Really pleased with these. The quality is excellent for the price and they arrived super fast. The grey colour looks smart and professional. Perfect for my online shop.

Thank you

a
andrew metcalf
Best posting bags ever

Very happy with these. The dark grey colour is much nicer than plain white and they feel genuinely substantial. Not flimsy at all. Will definitely keep buying from this seller.

Thank you

f
farhad kianfar
Very professional appearance

Great for small business use. I order in bulk and the price per bag is excellent. Quality is consistent across every pack I've ordered. The waterproof coating is brilliant.

Thank you

A
Ali Ocak
Thick and durable bags

These are by far the best parcel bags I've used. Thick, sturdy and the seal never fails. I send clothes and accessories regularly and not a single bag has split or leaked.

Thank you

J
John Parkinson
Great self-seal bags

I've tried loads of different mailing bags and these are the best by some distance. The polythene is noticeably thicker and the seal is rock solid. Perfect for my eBay business.

Thank you

G
Geoff Riches
Strong and waterproof

These are now my go-to mailing bags. The slate grey is professional and understated and the self-seal strip grips brilliantly. Great for small items and larger clothing bundles alike.

Thank you

J
James Shanks
My favourite mailing bags

Perfect posting bags. The polythene is thick, the tamper-proof seal is reliable and the grey looks very smart. Far better than any other bags I've tried at this price point.

Thank you

J
John Short
Great self-seal bags

Brilliant bags at a brilliant price. The charcoal colour gives a really upmarket feel to my packaging. Seal holds perfectly and they're completely waterproof. Five stars without hesitation.

Thank you

a
alfie Cruttenden
Waterproof and reliable

These grey mailing bags are exactly what I was looking for. Waterproof, strong seal and a lovely dark grey colour. Much better than the cheap bags I was using before.

Thank you