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EN ISO 20471
EU and international standard for high-visibility clothing.
EN ISO 20471 sets the standard for high-visibility clothing used in environments where workers need to be seen clearly to stay safe. Alsico supplies compliant hi-vis garments designed for industries from construction and rail to utilities and logistics, keeping teams visible, protected, and supported with flexible procurement solutions.
what is EN ISO 20471?
EN ISO 20471 is the European and international standard for high-visibility clothing, designed to ensure workers are easily seen in environments where visibility is essential. By combining fluorescent fabrics with reflective materials, garments certified to this standard reduce the risk of accidents in low-light conditions or areas with heavy traffic.
Alsico specialises in producing hi-vis PPE that meets all certification requirements, keeping your workforce safe and compliant.
EN ISO 20471 classes – choosing the right level of visibility
To help you choose the right protection for your team, it’s important to understand the differences between the three classes of EN ISO 20471 garments. Each class is designed for specific risk levels and working conditions, ensuring the right balance of visibility and comfort.
For a more detailed breakdown, read our guide to hi-vis classes.
how we test our EN 61482-2 clothing
EN ISO 20471 high-visibility clothing is essential across a wide range of industries where worker visibility is critical. Sectors such as those below rely on hi-vis garments to keep teams safe in challenging and high-traffic environments.
our EN ISO 20471 clothing range
Alsico offers a comprehensive range of hi-vis garments tested to EN ISO 20471 standards, designed to keep your workforce visible, comfortable, and protected. Our collection includes jackets, trousers, overalls, and vests, all engineered for durability and daily wear in demanding environments.
We provide multiple fits and a wide size range to suit every team member, alongside options for corporate branding and customisation so your hi-vis clothing can reflect your company identity. For workers exposed to electrical hazards, many of our garments are also compatible with arc flash protection, whilst others are designed with additional wearer protection features tailored to industry-specific risks.
frequently asked questions
EN ISO 20471 is the international standard for high-visibility clothing, designed to make workers clearly visible in low-light conditions or high-risk environments. It combines fluorescent fabrics with reflective materials to reduce the risk of accidents.
The standard divides garments into three classes based on the level of visibility: class 1 (basic), class 2 (medium), and class 3 (high). The higher the class, the greater the area of fluorescent and reflective materials.
Workers in environments where visibility is critical—such as construction, rail, roadworks, logistics, utilities, and power generation—should wear EN ISO 20471 compliant clothing to stay safe.
- class 1: minimal visibility, suitable for lower-risk tasks
- class 2: medium visibility, recommended for moderate-risk situations
- class 3: maximum visibility, designed for high-risk environments with fast-moving traffic or heavy machinery
Compliant garments will carry EN ISO 20471 certification labels and documentation. Alsico garments are independently tested to meet these standards, ensuring your team is protected and compliant.
Yes. Alsico offers a full customisation service, allowing you to add logos, colours, and other branding elements to your hi-vis garments without affecting compliance.
No. Only garments tested and certified to the standard meet EN ISO 20471 requirements. Other hi-vis clothing may offer visibility benefits but is not guaranteed to meet official safety standards.
Absolutely. Alsico supports procurement teams with large-scale contracts, delivering compliant hi-vis clothing in the quantities you need while maintaining quality and consistency.
contact our team to find out how we can supply and tailor EN ISO 20471 compliant hi-vis clothing for your workforce
why choose alsico for EN ISO 20471 compliant clothing?
Alsico combines decades of expertise with strict compliance processes, helping procurement teams source EN ISO 20471 garments with confidence. From large-scale contracts to bespoke garments, we deliver flexible solutions that ensure visibility, safety, and comfort.
key reasons to choose alsico:
- certified compliance with EN ISO 20471 standards
- wide range of hi-vis garments for multiple industries
- expertise in supporting procurement teams with large-scale supply
- customisation options for corporate branding and specific requirements
- durable, comfortable designs suitable for daily wear
- rigorous quality control and testing for peace of mind
contact our team to find out how we can supply and tailor EN ISO 20471 compliant hi-vis clothing for your workforce.
learn more about the sub environments we supply into
electricity and arc flash
Our clothing, tailored to specific risk levels, offers significant protection, enhancing safety in industries where Arc Flash incidents are prevalent, minimising the risk of serious burns and injuries.
heat, flame, and welding
Burning hot embers, sparks and fire should never touch the skin of a human, our high-performance, FR and Welding protection garments are essential for workers in these environments.
visibility
Stay seen and secure with our high-visibility solutions, designed to keep workers visible and protected in environments such as railways, roads, docks, airports, and construction.
anti-static / ESD
Industries where electrostatic discharge poses a threat require anti-static/ESD garments. These specialized garments prevent static electricity buildup during sensitive operations, providing a crucial line of defense for worker safety.
molten metals
Protective solutions to ensure your team's safety from molten metal hazards, ensuring maximum-level protection against various metals, including zinc, nickel, and lead, ensuring your team's safety.
chemical
Chemical-resistant attire is necessary for protecting workers from hazardous substances in various industries. Alsico's reliable protective clothing creates a secure barrier against potentially harmful chemicals, prioritizing workplace safety.
rain and cold
Rain and cold weather workwear is pivotal in ensuring safety and comfort in challenging conditions, ensuring workers across diverse industries can perform their tasks safely and efficiently.
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