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Hi Vis Classifcation and Care Guide

Our handy guide to industry classifications, certification and caring for your screen printed and embroidered hi vis workwear.

For further information on our product range, you can also take a look at our guide to customising hi-vis or hi-vis clothing range.

If you need any help drop us a line on [email protected] or give us a call on 01280 824836

Hi-Vis Clothing is essential in industries where a significant amount of the work takes place near traffic, motorised vehicles and construction environment or during the night. Using the correct safety workwear is essential and must be prioritised, even if only worn for a certain part of the working day. In a commercial or industrial setting, high visibility warning clothing must comply with the EN471:2003 specification.

There are many roles that require Hi Vis clothing to be worn, these include:

Construction workers, Heavy equipment operators, Police, Firefighters, Tow truck operator, Crossing Guard, Airport ground staff, Railway workers, Warehouse workers and Event security…

Our handy guide to classifications, certification and caring for your screen printed and embroidered hi vis workwear is designed to help you choose the right product for the right price, if you have any questions just let us know.

Hi Vis Clothing is usually made of three key components:


What is EN ISO 20471?

EN ISO 20471 is a European standard, used on visible workwear for employees working in high risk areas and sets out requirements for the minimum areas of reflectivity and placement of tape against the base fabric in a garment.

Three Colours are covered by the EN ISO 20471 certification: Yellow, Red and Orange.

As an employer it your legal requirement to provide your team with the appropriate hi vis and safety clothing free of charge to any staff members who are working within a high-risk environment. Selection of hi vis should be made after an appropriate risk assessment has been made.

EN ISO 20471 is divided into three classes according to the risk zone in which an and the suitability of the clothing in protecting the wearer. It is the visibility standard and therefore the needs of the area such as reflectors and fluorescent fabric that denotes which class should be used.

We supply a range of brands and products which meet EN ISO 20471  standards including Uneek, BeSeen, Result, Dickies, Yoko and Portwest.

View our full range of personalised hi-vis clothing here

Confirms to EN ISO 20471 Class 1


Minimum Protection Level of Hi Vis Clothing

For low risk environments with reduced visibility and without heavy moving machinery or vehicles on site.

  • Minimum background material 0.14m sq.
  • Minimum retro-reflective material 0.10m sq

Uneek – UC807  Hi Vis Trousers Would be Class 1, Suitable for print and embroidery personalisation.

Confirms to EN ISO 20471 Class 2


Intermediate Protection Level of Hi Vis Clothing

May not include whole body coverage e.g. high vis vests without sleeves.

  • Minimum background material 0.50m sq.
  • Minimum retro-reflective material 0.13m sq.

Most Hi-Vis Vests are Class 2, For Example our popular be seen Hi-Vis Vest, suitable for print and embroidery personalisation

Confirms to EN ISO 20471 Class 3

CLASS 3- Maximum Protection Level of Hi Vis Clothing

For high risk environments – such as highway engineers or construction workers on sites with heavy duty and moving machinery.

  • Minimum background material 0.80m sq.
  • Minimum retro-reflective material 0.20m sq.

Our Uneek Hi-Vis Bomber Jacket Would be Class 3 – Suitable for print and embroidery personalisation


RIS-3279-TOM (formerly GO-RT 3279) is an additional high visibility certification which only applies to the railway industry within the UK, rather than the EU-wide nature of other EN standards. The purpose is the ensure the visibility and safety of rail workers on or near railway tracks, so that they are seen by trains approaching or passing at speed.

Garments must meet Class 2 High Visibility standards set out within ISO 20471 and be of a specific orange colour, the coordinates are specified as Fluorescent Orange X:0.588. Y.0371 with a minimum luminance factor of 0.4. Also stipulated in RIS-3279-TOM is the need of retro-reflective materials, with photometric and physical performance aligned with EN 20471.

We supply a range of brands and products which meet RIS-3279-TOM standards including Uneek, BeSeen, Result, Dickies, Yoko and Portwest.

View our full range of personalised hi vis clothing here

Care and Maintenance of Your Personalised Hi Vis Clothing

The dirtier a hi vis garment becomes, the less effective it will be. Ensure your hi vis workwear is kept clean and washed regularly or replaced when permanently damaged. It is essential that no part of the garment is cut off or removed as this will compromise the visibility requirements and thus the class rating of the garment, potentially putting the wearer in danger. Finally, make sure the garment is always worn fastened to ensure the highest level of visibility and protection and minimise the risk of catching clothing in machinery etc.

Prolonging the Life of Your Hi Vis Clothing

Buy Long – Life Garments

If your items are for a one-off event, then the budget option may be the best choice but if the items are to be worn regularly within the working day then buying higher quality items will be more cost effective in the long run.

Wash Regularly, With Care

 Hi-Vis clothing can be regularly in contact with oil, dust and grease which can compromise the protective features of the garments. This means that regular washing of hi vis clothing is essential.

  1. Always Check the Label
  2. Turn Inside Out to minimise fading and abrasion
  3. Remove items from Pockets
  4. Flatten Out Collars and Cuffs
  5. Choose a suitable detergent – This is essential for maintaining the quality of your hi vis workwear. Non biological detergent is recommended technical fabrics such as breathable or waterproof.
  6. Wash separately to prevent dye transfer from other garments damaging the visibility of the fabric.
  7. Keep note of the number of washes, hi vis clothing has a maximum number of washes due to the reflective tape; we recommend checking your care instructions carefully.
  8. Wash at a low temperature, for screen printed and embroidered clothing we suggest no more than 40 degrees, however the requirements will vary from one garment to another, so it is advisable to check the label.

Check Clothing Regularly

Look out for tears, rips or stains regularly and repair / replace as necessary, safety should remain the number one priority.

Store Correctly

  • Store away from oil, grease direct sunlight or alternative sources of UV to reduce stains and colour fading.
  • Store in cool, clean and dry areas with space to hang wet garments preventing rotting or deterioration of fabrics.

By taking these steps you will ensure the safety of your team, reduce cost and minimise your environmental impact by keeping clothing out of landfill for a much longer period.

To help you meet your health and safety requirements, here at T King Associates we stock a wide range of hi vis clothing which is fully compliant with the specifications of EN ISO 20471. Our catalogue includes motorway vests, hi vis vests, fleeces, hoodies, polo shirts, trousers, rucksacks and more.

If you are in doubt, do not hesitate to give us a call on 01280 824836 or drop us a line on [email protected] and we will be happy to help advise you further


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Email: [email protected]

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