What is EN ISO 20471?
EN ISO 20471 is used for high-visibility clothing designed to make the wearer more noticeable in situations where visibility is important for safety. It addresses the performance and arrangement of high-visibility background material and retroreflective material used in garments.
For distributors, contractors and industrial buyers, the standard provides a useful framework when specifying safety vests, jackets, trousers and other high-visibility workwear.
Why does the standard matter when sourcing hi-vis clothing?
A garment can look bright without necessarily meeting the performance requirements expected for certified high-visibility clothing. Colour alone is therefore not enough when evaluating a product for professional use.
During sourcing, buyers commonly need to consider:
- The intended working environment.
- The required garment performance class.
- Fluorescent background material.
- Retroreflective tape performance.
- The placement of reflective materials.
- Garment design and coverage.
- Relevant test reports and certification documents.
Is EN ISO 20471:2013 Still Current in 2026?
Yes. EN ISO 20471:2013 with Amendment A1:2016 remains the current published basis used for high-visibility clothing requirements in many markets. At the ISO level, ISO 20471:2013 and Amendment 1:2016 remain published, while a revised ISO/DIS 20471 is currently under development.
A Draft International Standard does not automatically replace the current published edition. Professional buyers should check the exact standard edition shown on supplier declarations, certificates and test reports, together with any national or regional requirements that apply to the destination market.
Official references: ISO 20471:2013 and ISO/DIS 20471 development status.
EN ISO 20471 Class 1 vs Class 2 vs Class 3
EN ISO 20471 uses three garment classes to represent different levels of conspicuity. Class 3 provides the highest level, while the appropriate class should be selected according to the risk assessment, working environment and the amount and placement of high-visibility materials used in the garment.
High-visibility garments can be divided into different performance classes. In general, the classification relates to the amount and arrangement of high-visibility materials incorporated into the finished garment.
The appropriate class should be selected according to the risks of the working environment rather than simply choosing the highest class for every application.
Buyers sourcing products for construction, road maintenance, logistics, utilities or other industrial applications should communicate the intended use clearly to the supplier before mass production begins.
Fluorescent background material
Fluorescent background material is intended to increase daytime visibility. High-visibility garments are commonly produced in fluorescent colours such as yellow or orange-red depending on the required specification and market.
Fabric selection should also take account of practical requirements such as garment weight, breathability, durability, washing performance and the working climate.
Why reflective tape matters
Retroreflective material helps return light toward its source, improving the visibility of the wearer when illuminated by vehicle headlights or other light sources in low-light conditions.
For bulk orders, reflective tape should not be treated as a purely decorative component. Buyers should evaluate the tape specification, garment placement and compatibility with the intended use of the finished product.
What should buyers check before placing a bulk order?
A clear specification before production can reduce misunderstandings and quality problems later in the order.
Common sourcing mistakes
- Choosing products only by appearance or unit price.
- Assuming every fluorescent garment is certified.
- Ignoring reflective tape placement after customization.
- Failing to confirm certification scope before production.
- Using the same garment specification for very different job risks.
OEM and customized hi-vis workwear
For OEM projects, customization should be planned without compromising the functional design of the garment. Logo position, pockets, colours, reflective tape configuration and additional features should be reviewed together before bulk production.
A manufacturer should be able to discuss both visual customization and the technical requirements of the finished safety garment.
SOURCE FROM SAFETYGARMENTS
EN ISO 20471 Buyer Checklist for Bulk Orders
Before placing a bulk order for high-visibility workwear, professional buyers should verify both the garment specification and the supporting compliance documentation. Use the following checklist when comparing suppliers.
- Confirm the required EN ISO 20471 garment class for the intended working environment.
- Check the fluorescent background material and retroreflective tape specification.
- Review the placement and visible area of high-visibility materials on the finished garment.
- Request relevant test reports, declarations or certification documents from the supplier.
- Confirm that customization, logos or pockets will not compromise the required visibility design.
- Approve a pre-production sample before large-volume manufacturing begins.
Buyers evaluating safety vests can also review our HVV1001 hi-vis vest or browse the hi-vis workwear product range.
EN ISO 20471 FAQ for Buyers
What is EN ISO 20471 used for?
EN ISO 20471 covers performance requirements for high-visibility clothing designed to make the wearer more conspicuous in environments where visibility is important for safety.
What is the difference between Class 1, Class 2 and Class 3?
The three classes represent different levels of conspicuity. Class 3 provides the highest level. The appropriate class should be selected according to the workplace risk assessment and garment design requirements.
Is ISO 20471:2013 still current?
ISO 20471:2013 and Amendment 1:2016 remain published standards. A revised ISO/DIS 20471 is under development, so buyers should confirm the edition required for their destination market and project.
What documents should a buyer request from a supplier?
Depending on the market and purchasing specification, buyers may request relevant test reports, declarations, certification documents, material specifications and approved production samples before bulk manufacturing.
Looking for Hi-Vis Workwear Manufacturing?
Explore our high-visibility workwear range or contact our team about OEM, customization and bulk purchasing requirements.