Hi-Vis Branding Without Breaking EN ISO 20471: A Simple Guide for Site Managers

You can brand hi-vis workwear and still protect its visibility, but the logo’s size, position and method matter. Before ordering, check the site’s requirements and the garment’s certification, then make sure the decoration doesn’t cover or reduce the fluorescent or reflective areas.

That’s the simple rule behind buying personalised hi-vis with confidence. EN ISO 20471 certification applies to the garment as made and tested. Adding a logo or badge can affect the visible material, so a certified blank garment isn’t automatically proof that every decorated version remains compliant.

What EN ISO 20471 Means

EN ISO 20471 is the standard for high-visibility clothing. In plain English, it sets requirements for garments designed to make the wearer easier to see in daylight and when illuminated in the dark.

The garment uses two kinds of material:

• Fluorescent material helps make the wearer more visible in daylight.
• Reflective material returns light towards its source, helping the wearer stand out in poor light or darkness.

The standard has three classes. The class depends on the garment’s areas and arrangement of fluorescent and reflective materials:

• Class 1: The lowest level of visibility in the standard.
• Class 2: A higher level, with more required visible material.
• Class 3: The highest level, with the greatest coverage requirements.

A higher class isn’t automatically the right choice for every job. Your risk assessment, work conditions and client or site rules should guide the decision. Check the garment label and documentation rather than judging by colour or appearance alone.

For background on choosing high-visibility clothing, see the HSE’s guidance on high-visibility clothing. For advice about logos and alterations, the British Safety Industry Federation’s PPE buyer guidance is also useful.

Who Needs Compliant Hi-Vis?

Start with the work, not the logo. Consider the traffic and vehicle risks, lighting, weather, visibility around the work area and how the garment will be worn.

Rail and roadside work are common examples where specific hi-vis requirements are enforced. Construction, facilities, logistics and cleaning teams may also have requirements set by a site, employer or client. Some general construction sites may accept a basic vest if no specific standard is required, but don’t assume that applies to your job.

Check before you order:

1. Read the site rules and contract or client requirements.
2. Ask which class and garment type are required.
3. Confirm whether the clothing must meet EN ISO 20471.
4. Check that the garment and its decoration suit the intended use.

The site manager or buyer should confirm the requirement with the responsible person for the work. If the rules are unclear, get them clarified before placing a team order.

The Golden Rule: Keep Visibility Areas Clear

Never cover or reduce the fluorescent or reflective areas with a logo, badge or other decoration. Keep reflective bands continuous and unobstructed.

That includes thinking about the whole outfit. A compliant hi-vis jacket worn under another garment that hides its reflective bands won’t provide the intended visible coverage. Likewise, a vest worn over a jacket can conceal reflective areas on the jacket. Check what staff will actually wear on site, not just how each item looks on its own.

A large logo across the back may look bold, but if it overlaps reflective tape or takes up too much fluorescent material, it can compromise the garment’s visibility. Zip panels and garment details also matter: don’t place decoration where it interrupts the reflective layout or reduces the visible material.

When in doubt, ask the garment supplier or certificate holder to confirm what decoration and placement are permitted for the specific garment and size. Don’t treat a mock-up as proof of compliance.

Choose a Decoration Method That Suits Hi-Vis

The safest approach is usually simple: keep branding small, use one planned position and place it away from reflective bands. A non-critical contrast panel may offer a suitable location, but it still needs checking against the garment’s requirements.

• Heat transfer vinyl can work well for names and numbers, provided the chosen position and transfer don’t cover or reduce required visibility areas.
• Small printed logos may suit a suitable non-critical area. The location and size need checking before production.
• Embroidery can be an option where the fabric and placement allow it without reducing coverage or affecting the garment’s performance.

No decoration method is automatically safe for every hi-vis garment. Placement, garment design, size and the approved care instructions all matter. For practical background on decoration choices, see our guide to DTF versus embroidery for workwear.

Common Hi-Vis Branding Mistakes to Avoid

• A large back logo over reflective bands. Keep the bands clear and continuous.
• Printing across the fluorescent body. Decoration can reduce the amount of visible fluorescent material.
• Assuming a standard placement works on every size. A placement that seems fine on a larger garment may need a different check on smaller sizes.
• Layering without checking visibility. A vest, jacket or other layer can hide reflective bands underneath.
• Continuing to wear faded or damaged hi-vis. Dirt, wear and fading can affect visibility. Follow the garment’s care instructions and replace items that are no longer serviceable.
• Assuming the blank garment’s label settles the question. Ask whether the intended decoration and placement are covered by the garment’s compliance information.

Order for Your Team, Not Just One Person

For a consistent, easy-to-reorder uniform, decide on the garment type, colour and logo position before collecting sizes. If you need different garments for different roles or conditions, record those requirements clearly.

Keep the artwork and placement standard across the team. When you reorder, matching the garment, colour and branding helps the new items sit neatly alongside your existing kit. It also makes it easier to check that everyone is wearing the right layer for the job.

At Brand Me Now, we produce decoration in-house at our Birmingham workshop and have 25+ years of experience supplying customised workwear. There’s no minimum order quantity, and we offer free artwork checks and free digital mock-ups before production. We’ll help you review a proposed placement, but your site or client requirements, and the garment’s certification guidance, must determine whether it’s suitable.

Our standard embroidery lead time is 7 to 10 working days from artwork approval, with an express service available when required. Embroidery digitising is free on orders over £100; below that, there’s a one-off £15 fee. DTF is the only decoration method we offer with no setup fee. We also offer a price beat guarantee, UK-wide delivery and collection from our Birmingham studio.

Hi-Vis Compliance FAQs

Does adding a logo automatically make hi-vis non-compliant?

Not necessarily, but decoration can affect the visible material or layout. Check the permitted logo size and position for the specific garment with its supplier or certificate holder.

Which EN ISO 20471 class should I choose?

Choose the class required by your risk assessment, site rules or client. Classes indicate different levels of required visibility; don’t select by appearance alone.

Can I put a logo on reflective tape?

Keep logos and other decoration off reflective bands. Covering or interrupting them can affect the garment’s visibility.

Can a hi-vis vest be worn over a hi-vis jacket?

It depends on the garments and the site requirements. Check that the outer layer doesn’t hide the reflective bands needed for the intended level of visibility.

How can I check if a garment is certified?

Check the garment label and documentation for the stated standard and class. Ask the supplier to confirm whether the intended decoration and placement are covered.

Can Brand Me Now confirm my branded garment meets site rules?

We can check your artwork and prepare a free mock-up, but the site or client sets the requirement. Check the garment’s certification guidance and your site rules before approving production.

Check the Placement Before You Order

Send us your logo and the hi-vis garment you’re considering. We’ll provide a free artwork check and digital mock-up so you can review the proposed placement before production.

Request your free logo mock-up or get a quote for your team.