Fully customisable

100% recyclable

Custom sizing

Box Sleeve

Minimum order quantity: 5000

Cartonboard sleeves are the perfect addition to a mailer box. Instantly add colour and an extra layer to the packaging experience. Or quickly update your box printing to reflect new campaigns or seasonal trends.

  • High definition printing
  • Kerbside recyclable
  • Custom finishes
  • Custom sizing

From £0.10 / unit

Have questions? Contact us

Key features

Learn more

What is cartonboard?

Cartonboard is a paper-based packaging material made from either virgin wood pulp or recycled paper. It’s commonly used in box sleeves, cards and other lightweight packaging. Whilst cartonboard is made from the same materials as cardboard, cartonboard isn’t corrugated. This means it isn’t as durable in transit but is more versatile and much better for printing on. This is why it’s often used for retail and customer-facing packaging.

What is a custom box sleeve?

Box sleeves are printed sheets of cartonboard that easily wrap around mailer boxes or product boxes, instantly adding colour to your packaging. This is ideal for retail and e-commerce packaging across a range of industries, from fashion and cosmetics to food. As box sleeves are made from lightweight cartonboard, they’re also cost-effective, versatile and great for printing on.

Need inspiration for your box sleeve? Try Spring AI

How do I find the right size for my box sleeve?

First, you need the exact dimensions of your mailer box, product box or other packaging. You can easily find these as you customise packaging using the Sourceful platform.

Next, you need to decide the length of your box sleeve. Usually, this will be full-length (which will cover all of your packaging), 3/4 length (most common) or 1/3 length (most cost-effective). You can also choose a custom length. Remember that full-length box sleeves will be the most expensive as they use the most material.

The height and width of your sleeve should then be the same as the external dimensions of your box. This will ensure a snug fit and the best presentation.

Supply chain assurance

A resilient, responsible supply chain


We validate all supplier claims and third-party certifications such as ISO, BRC and FSC. And we ensure suppliers adhere to UK and EU laws on chemicals and product components, like UK REACH. This allows businesses to confidently buy high-quality products that align with a net-zero trajectory.

Vetted suppliers

We vet every supplier we work with. We do this through site visits and rigorous product testing.

Learn more

Quality control

Every order from our suppliers undergoes a quality inspection process before it’s shipped. Any order that fails quality inspection is returned to the manufacturer or reproduced immediately.

For orders manufactured internationally (outside the UK) we follow the Acceptable Quality Limit (AQL) method defined by ISO standards in ISO 2859 - 1.

For domestic orders manufactured in the UK we align supplier quality control processes with our own, performing spot checks on the supplier’s products from each lot throughout the year.

Learn more

Related products