Best Triplast Mailing Bags of 2026

Jordan Akhtar Avatar
Jordan Akhtar
Last Updated: 12 Feb 2026

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Triplast mailing bags are a reliable packaging solution for businesses and individuals alike. These bags are designed to securely transport items while protecting them from dust, moisture, and damage. With their durable construction and strong adhesive seal, Triplast mailing bags provide peace of mind when shipping items of various sizes and weights. Available in a range of sizes and colours, these bags are not only practical but also visually appealing. Whether you need to send documents, clothing, or small products, Triplast mailing bags are a recommended choice for all your packaging needs.

At a Glance: Our Top Picks

Triplast 9 x 12-Inch Grey Postal Bags Cover #TOP 1
Triplast 9 x 12-Inch Grey Postal Bags
ftb score rating icon 9.8
Triplast Purple Plastic Mailing Bags Pack Cover #TOP 2
Triplast Purple Plastic Mailing Bags Pack
ftb score rating icon 9.7
Triplast Grey Plastic Mailing Bags (Pack of 100) Cover #TOP 3
Triplast Grey Plastic Mailing Bags (Pack of 100)
ftb score rating icon 9.5

Top 10 Triplast Mailing Bags

#TOP 1

Triplast 9 x 12-Inch Grey Postal Bags

MBGRY9X12100
Grey
9" x 12"
Triplast 9 x 12-Inch Grey Postal Bags Cover
Triplast 9 x 12-Inch Plastic Mailing Postal Bag - Grey (Pack of 100)

The Triplast Postal Bags are strong and reliable for sending your items securely through the post or via courier services. Made in the UK, these fully opaque bags ensure that the contents remain hidden, providing you with added privacy. With a thickness of 55mu, they are designed to be durable and robust. The strong adhesive and 40mm Peel & Seal strips make sealing the bags easy and efficient, ensuring your items stay protected during transit.

What We Like
Strong and durable construction
Fully opaque for privacy
Easy to seal
Manufactured in the UK
#TOP 2

Triplast Purple Plastic Mailing Bags Pack

MBPUR10X14100
Purple
10" x 14"
Triplast Purple Plastic Mailing Bags Pack Cover
Triplast 10 x 14-Inch Plastic Mailing Postal Bag - Purple (Pack of 100)

The Triplast Mailing Bags are strong and reliable, perfect for sending items securely through the post or courier services. Manufactured in the UK, these fully opaque bags ensure that your items remain unseen during transit, providing added privacy. With a high-performance thickness of 55mu, they offer excellent durability, while the strong adhesive with 40mm Peel & Seal Strips makes sealing your packages quick and efficient. This means you can package your items with confidence, knowing they will arrive safely at their destination.

What We Like
Strong and durable construction
Fully opaque for privacy
Easy to seal with adhesive
Made in the UK
#TOP 3

Triplast Grey Plastic Mailing Bags (Pack of 100)

MBGRY16X21100
Grey
16" x 21"
Triplast Grey Plastic Mailing Bags (Pack of 100) Cover
Triplast 16 x 21-Inch Plastic Mailing Postal Bag - Grey (Pack of 100)

The Triplast Mailing Bags are strong, UK-manufactured postal bags designed for sending items securely through the post or via courier. Their fully opaque design ensures that the contents remain hidden, providing privacy for your parcels. Made from high-performance 55mu material, these bags are durable and reliable. The strong adhesive with 40mm Peel & Seal strips makes sealing easy and ensures your items stay secure during transit, offering you peace of mind when shipping.

What We Like
Strong and durable design
Fully opaque for privacy
Easy to seal
Pack of 100 bags
#TOP 4

Triplast 10 x 14-Inch Pink Postal Bags

MBPIN10X14100
Pink
10" x 14"
Triplast 10 x 14-Inch Pink Postal Bags Cover
Triplast 10 x 14-Inch Plastic Mailing Postal Bag - Pink (Pack of 100)

The Triplast Postal Bags are strong mailing solutions ideal for sending items securely through the post or via courier. Being fully opaque, you can rest assured that the contents remain concealed, providing privacy for your parcels. The high-performance 55mu material ensures durability, while the strong adhesive with 40mm Peel & Seal strips makes sealing your packages quick and effortless. With top-quality construction, these bags are perfect for both personal and professional use, offering convenience and reliability in every shipment.

What We Like
Strong and durable material
Fully opaque for privacy
Easy to seal
Manufactured in the UK
#TOP 5

Triplast 14 x 20-Inch Opaque Postal Bags

MBRED14X20100
14" x 20"
Triplast 14 x 20-Inch Opaque Postal Bags Cover
Triplast 14 x 20-Inch Plastic Mailing Postal Bag - Red (Pack of 100)

The Triplast Postal Bags are strong and reliable, perfect for sending your items securely through the post or via courier. Made in the UK, these mailing bags are fully opaque, ensuring that the contents remain hidden from view. With a high-performance thickness of 55mu, these bags offer excellent durability. The strong adhesive with 40mm Peel & Seal Strips makes sealing your packages quick and easy, providing peace of mind during transit.

What We Like
Strong and durable construction
Fully opaque for privacy
Easy-to-use Peel & Seal
Made in the UK
#TOP 6

Triplast 14 x 21-Inch Grey Postal Bags

MBGRY14X21200
Grey
14" x 21"
Triplast 14 x 21-Inch Grey Postal Bags Cover
Triplast 14 x 21-Inch Plastic Mailing Postal Bag - Grey (Pack of 200)

The Triplast Postal Bags are strong and reliable, designed for sending items securely through the post or via courier. Their fully opaque design ensures that contents remain hidden, providing peace of mind. Made from high performance 55mu material, these bags are built to withstand the rigours of mailing. The strong adhesive with 40mm Peel & Seal Strips guarantees a secure closure, making it easy for you to send your parcels without worry.

What We Like
Strong and durable construction
Fully opaque for privacy
Easy to seal and secure
Suitable for various mailing needs
#TOP 7

Triplast Biodegradable Mailing Bags - Black, 10 Pack

BIODEGMB223000010
Black
22x30 inches
Triplast Biodegradable Mailing Bags - Black, 10 Pack Cover
Triplast 10 x Biodegradable Mailing Bags (Size: 22x30" / 55x75cm; Colour: Black) | Self Sealing Eco Friendly Poly Mailers | Packaging, Postal, Parcel Bags for Posting Clothes, Books, & More

The Triplast Biodegradable Bags are eco-friendly mailing solutions made from recycled LDPE polymer. They are genuinely biodegradable, breaking down within a few years, which helps reduce plastic waste. With a robust three-layer design, these bags are more puncture-resistant than standard options, ensuring your items remain secure during transit. The opaque black design not only conceals contents for privacy but also offers a sleek, professional appearance. Additionally, the 40mm wide peel and seal strip makes sealing your packages quick and hassle-free.

What We Like
Biodegradable and recyclable material
Strong and puncture-resistant
Opaque design for privacy
Easy peel and seal strip
#TOP 8

Triplast 16x21 Inch Grey Plastic Mailing Bags

MBGRY16X21200
Grey
16" x 21"
Triplast 16x21 Inch Grey Plastic Mailing Bags Cover
Triplast 16 x 21-Inch Plastic Mailing Postal Bag - Grey (Pack of 200)

The Triplast Plastic Mailing Bags are strong, UK-made postal bags ideal for sending parcels securely through the post or courier services. Their fully opaque material keeps your items completely hidden, providing privacy and protection. These high-performance 55mu bags feature a robust adhesive with 40mm Peel & Seal strips, making them easy to seal securely without tape. Designed from top-quality Triplast coextruded material, these bags offer durability and reliability, helping you send items with confidence and convenience every time.

What We Like
Strong UK manufactured bags
Fully opaque for privacy
High performance 55mu thickness
Secure 40mm Peel & Seal adhesive
Top quality coextruded material

Triplast BB1 Clear Bubble Wrap Pouch Bags 100x135mm

Clear,transparent
Mittel
Triplast BB1 Clear Bubble Wrap Pouch Bags 100x135mm Cover
Triplast BB1 100 X 135"Clear Bubble Wrap" Pouch Bag (Pack of 200)

The Triplast BB1 Bubble Wrap is a fully transparent pouch bag measuring 100mm by 135mm with an additional 30mm lip, making it ideal for protecting small items while allowing you to see the contents clearly. The peel and seal strip ensures quick and easy sealing without the need for extra tape, saving you time and effort. Manufactured in the UK, this product guarantees quality and reliability. Perfect for packaging, storage, or shipping, it offers both convenience and protection.

What We Like
Fully transparent design
Peel and seal strip
Compact 100mm x 135mm size
Includes 30mm lip
UK manufactured quality
#TOP 10

Triplast BB3 Clear Bubble Wrap Pouch Bags

Clear,transparent
180mm x 235mm
Triplast BB3 Clear Bubble Wrap Pouch Bags Cover
Triplast BB3 180 X 235"Clear Bubble Wrap" Pouch Bag (Pack of 100)

The Triplast BB3 Bubble Bags offer fully transparent pouches, allowing you to easily see the contents inside without opening them. Measuring 180mm by 235mm with an additional 30mm lip, these bags provide ample space for your items while ensuring secure closure. The peel and seal strip adds convenience, making it quick and effortless to seal the bag, saving you time and effort. As a UK-manufactured product, you can trust in the quality and reliability of these bubble wrap pouches for your packaging needs.

What We Like
Fully transparent for easy viewing
Generous size with extra lip
Convenient peel and seal strip
UK manufactured quality
Buying Guide Image
Editor's Notes

During our Triplast mailing bag research, we found 26 Triplast mailing bag products and shortlisted 10 quality products. We collected and analyzed 32,208 customer reviews through our big data system to write the Triplast mailing bags list. We found that most customers choose Triplast mailing bags with an average price of £12.07.

The Triplast mailing bags are available for purchase. The top 10 picks range in price from a low of £5.00 to a high of £20.00, find the one that fits your budget.

Written by
Jordan Akhtar Avatar

Jordan Akthar owns one stationery store in Bradford, and another in Derby. He started with a corner bookshop, and now the rest is history. He is often found in his stores taking count of inventories of books and stationery. Jordan also likes to write, and this drove his passion for writing articles on stationery maintenance. He owns a blog, where in his free time, he would write DIY tips on how you can recycle and refine your stationeries.