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Envelopes Mailing Supplies Comparison - September 2025

3 Best Envelopes Mailing Supplies In the UK

1
Best Choice
9.7Exceptional
2
Best Value
9.5Excellent
3
9.4Excellent
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Model

25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]
Model
50 Mixed Grey Mailing Poly Postal Self Seal Bags 5 Sizes 10 from Each iSOUL Small to Large Postage Packaging Assorted Mailers Posting Shipping Post Parcels Package Bags
Model
Mailing Bags, Grey Parcel Delivery Bags with Self-Seal Closure, Flexible Lightweight and Tear Proof Postal Mailing Bags, Multipack Mailing Envelope Bags (06x09, 25pk)

Brand

iSOUL
Brand
iSOUL
Brand
Straame

Reviews

9,600 reviews
Reviews
66,788 reviews
Reviews
5,012 reviews

Tech Specs

product dimensions

60.96 x 43.18 x 0.03 cm 690 g
product dimensions
2.2 x 22 x 29 cm 510 g
product dimensions
23 x 15.5 x 0.1 cm 80 g

shape

Rectangular
shape
Rectangular
shape
Rectangular

item weight

690 g
item weight
510 g
item weight
80 g

size

25PK
size
5 Size 50
size
25pk

customer reviews

4.7 4.7 out of 5 stars 2, 400 ratings 4.7 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 16, 697 ratings 4.6 out of 5 stars
customer reviews
4.5 4.5 out of 5 stars 1, 253 ratings 4.5 out of 5 stars

color

17 X 24
color
Grey
color
06x09

Available On

Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.7
    1
    iSOUL

    25 x Strong Large Grey Mailing Postal Postage Bags 17 x 24 Packaging Mailers [Use in Parcel, Delivery, Shipping, Mail, Package] [432mm x 610mm]

    Why we love it

    Self seal closure
    Secure tamper resistant
    Lightweight sturdy
    Main highlights
    • We Have Small to Large Mailing bags with the size of 6 x 9 Inch / 9 x 12 Inch / 10 x 14 Inch / 12 x 16 / 17 x 24 Inch. Parcel bags for posting Mailing Packaging and more.
    • This iSOUL Opaque Mailing bags incorporate a permanent self-seal closure and are made from an opaque 60-micron film. Our posting bags self-adhesive strong closure, water and dirt resistant air sealed bags made for Secure the inside and outside.
    • This Plastic Postage Bags are can be use in any Courier or sealed Airtight storage Purpose, you will get these bags in five different sizes for any size packing material, with the self-seal lip make the parcel air tight and water resistant for personal and business use.
    • Safe and Secure Package Bags for Clothes or Packaging: These plastic mailers have a sticky strip for easy closure. Once sealed, these bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
    • Plastic envelopes for posting: iSOUL Large postage bags are very light weight and sturdy. You can use its full size or put something smaller inside and wrap the excess before sealing. Postage Bags for clothes , Books, and more
  • 9.5
    2
    iSOUL

    50 Mixed Grey Mailing Poly Postal Self Seal Bags 5 Sizes 10 from Each iSOUL Small to Large Postage Packaging Assorted Mailers Posting Shipping Post Parcels Package Bags

    Why we love it

    Secure self-seal closure.
    Water and dirt resistant.
    Available in multiple sizes.
    Main highlights
    • These Plastic Postage Bags can be used for any Courier or sealed Airtight storage Purpose, you will get these bags in five different sizes, ideal for packing items of all types, shapes and sizes. The self-seal lip makes the parcel air tight and water resistant for personal and business use.
    • These Opaque Mailing bags incorporate a permanent self-seal closure and are made from an opaque 60 micron film. Our posting bags have a self-adhesive strong closure. These air sealed postage bags are water and dirt resistant and made to secure the inside and outside.
    • Small to Large Mailing bags 6 x 9 Inch / 9 x 12 Inch / 10 x 14 Inch / 12 x 16 Inch / 14 x 19 Inch. Parcel bags for posting Mailing Packaging and more
    • Safe and Secure Package Bags:- These plastic mailers have a sticky strip for easy closure. Once sealed, these bags are very hard to open allowing your items to arrive safely without risk of opening or tampering.
    • Plastic envelopes for posting:- iSOUL Small to Large postage bags are very light weight and sturdy. You can use its full size or put something smaller inside and wrap the excess before sealing.
  • 9.4
    3
    Straame

    Mailing Bags, Grey Parcel Delivery Bags with Self-Seal Closure, Flexible Lightweight and Tear Proof Postal Mailing Bags, Multipack Mailing Envelope Bags (06x09, 25pk)

    Main highlights
    • TEAR-PROOF MAILING BAGS: Perfect for sending multiple items, the postal bags are made from durable material. Tear-proof and resistant to water. Anything you send by mail with these bags will be safe from dust, moisture, or temper.
    • SPECIFICATIONS: These packaging bags are available in a wide range of sizes, from small to large: 6x9inch (152 x 229 mm approx.), 9x12inch (229 x 305 mm approx.), 10x14inch (254 x 356 mm approx.), 12x16inch (305 x 406 mm approx.) For your convenience, we provide them in different multi quantity 25, 50, 100, 300, 500, 1000, 2000.
    • SELF-SEAL CLOSURE: The sealing lip permanently close and conceal the bag with strong adhesive glue. Put the content in the bag, peel the strap and seal carefully. Once it is closed, it is tough to open again, ensuring total privacy of the items sent.
    • SAFE AND SECURE: Safely and securely mail your items. The high-quality material of the mailing bags is 100% opaque to ensure confidentiality and privacy. The adhesive glue on the sealing lip provides the delivery bags with no risk of opening or tampering.
    • MAILING SOLUTION: Designed to be lightweight and flexible, these mailing bags are the ideal mailing solutions for a wide variety of business or private use. The postal bags have a great capacity to bear the weight of books, magazines, documents, clothes, shoes or other office and stationery items.

Our ranking system

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Features

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Consumer Reviews

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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

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When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

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