Can You Personalise Hi-Vis Vests Without Affecting EN ISO 20471 Compliance?

Yes, you can personalise hi-vis vests, but it has to be done carefully. Adding a company logo, staff role, department name, or site identification can make workwear look more professional and help teams stand out. However, high-visibility clothing is still PPE. That means branding must never reduce the garment’s safety performance.

In the UK, high-visibility clothing used as PPE should be suitable for the risk and manufactured to a recognised standard, with EN ISO 20471 setting requirements for visibility materials, garment design, and performance.

So, where is the line between safe personalisation and a compliance problem?

Let’s break it down.

EN ISO 20471 focuses on making the wearer visible in daylight and when illuminated by headlights in darker conditions. It does this through three key elements:

The standard also uses garment classes, with Class 1 offering the lowest visibility level and Class 3 offering the highest. These classes depend on the amount of visible fluorescent and reflective material used in the garment.

For a deeper explanation of colours and classifications, you can read: Hi Vis Colour Codes Explained (EN ISO 20471)

The main issue with personalised hi vis vests is not the logo itself. It is where and how the logo is applied.

Personalisation may affect compliance if it:

A small chest logo is usually less risky than a large back print, but every design should still be checked before production.

Both methods can be used, but each has different considerations.

A custom printed high visibility vest is often chosen for large logos, back text, staff roles, or event branding.

Printing works well when:

Embroidery can look smart, but it is not always the best choice for lightweight hi-vis vests.

It may create:

For many vests, printing is often the more practical option, especially for larger designs.

A custom reflective safety vest must still perform as a safety garment first.

Reflective tape should remain clear, visible, and uninterrupted. It should not be printed over, stitched through unnecessarily, or covered by patches.

Reflective tape is especially important in low-light conditions because it reflects light back towards the source, such as vehicle headlights. If branding interferes with that function, the vest may no longer provide the expected level of protection.

It depends.

If a vest is certified before customisation, that certification applies to the garment as originally tested. Once printing, embroidery, patches, or alterations are added, the supplier should ensure the decoration does not compromise the certified design.

This is why employers should avoid guessing.

Ask the supplier:

This is similar to repair decisions. Once the original garment is changed, compliance needs careful consideration. You may find this helpful:

Can You Repair Hi-Vis Clothing Without Losing Compliance?

Although each garment should be checked individually, safer branding areas often include:

Riskier areas include:

Before ordering personalised vests, consider the actual work environment.

For low-risk visitor use, a simple branded vest may be suitable. For roadside, construction, logistics, or machinery environments, visibility performance becomes much more important.

Employers should also remember that PPE must be suitable for the risk, not just visually branded. That means personalisation should support identification without reducing safety.

Sometimes, but it depends on the size, position, garment class, and available fluorescent background area. Large logos should be checked carefully before production.

No. Reflective tape should remain clear and unobstructed.

It can be suitable for small logos, but printing is often more practical for lightweight vests.

No. Personalisation is not automatically a problem. Poor placement or excessive coverage is the issue.

Personalising hi-vis vests can be done safely, but compliance must come before appearance.

A well-designed personalised vest can help identify your team, promote a professional image, and still support workplace visibility. The key is to keep reflective tape clear, protect fluorescent coverage, and choose a supplier that understands EN ISO 20471 requirements.

If you are planning to order personalised hi vis vests, a custom reflective safety vest, or a custom printed high visibility vest, make sure the design is checked properly before production.

Need help choosing safe branding options for your team? Brook Hi Vis can help you select personalised workwear that balances visibility, comfort, and compliance.