The Ultimate Guide to High-Visibility (Hi-Vis) Clothing

High-visibility (hi-vis) clothing is an essential safety measure for workers in low-light or high-risk environments. From construction crews and roadside workers to warehouse staff, hi-vis apparel helps prevent accidents by making individuals easier to see in any lighting condition. This guide breaks down how hi-vis clothing works, the latest safety standards, and how to choose the right gear.

How High-Visibility Clothing Works

• Fluorescent Fabric for Daytime Visibility: Hi-vis clothing is made from bright colors like yellow, orange, or red that reflect ultraviolet (UV) light, making them more visible during daylight hours.
• Reflective Strips for Nighttime Visibility: Retroreflective materials reflect light back toward its source, ensuring workers remain visible in low-light conditions.

Understanding the Latest Hi-Vis Safety Standards (2024 Update)

In the UK and Europe, hi-vis clothing must comply with EN ISO 20471, which replaced the older EN 471 standard. The regulation defines visibility requirements based on three protection classes.

EN ISO 20471 Classes

• Class 3: Maximum Visibility (High-Risk Areas)
  • Best for workers near fast-moving traffic (50mph+) or in low-light conditions
  • Typical garments: Long-sleeved jackets, coveralls, or full-body suits
  • Minimum fluorescent background area: 0.80 m²
  • Minimum reflective strip area: 0.20 m²
• Class 2: Medium Visibility (Standard Roadwork & Construction)
  • Suitable for road workers, site workers, and general construction
  • Typical garments: Vests, tabards, or jackets without sleeves
  • Minimum fluorescent background area: 0.50 m²
  • Minimum reflective strip area: 0.13 m²
• Class 1: Low Visibility (Non-Traffic Areas, Warehouses)
  • Used in low-risk environments where some visibility is required
  • Typical garments: Hi-vis trousers with reflective bands
  • Minimum fluorescent background area: 0.14 m²
  • Minimum reflective strip area: 0.10 m²

Tip: For maximum protection, pair Class 1 trousers with a Class 2 vest or jacket to upgrade the outfit to Class 3 compliance.

Other Safety Standards That May Apply

• EN 343: Waterproof and breathable protection against rain.
• EN 17353: Visibility for non-professional or off-road environments.
• RIS-3279-TOM: Mandatory orange hi-vis for railway workers in the UK.

How to Choose the Right Hi-Vis Gear

• Hi-Vis Vests & Jackets
  • Best for construction, traffic control, and site work
  • Ideal for layering over other clothing
  • Available in lightweight or insulated versions for different climates
• Hi-Vis Trousers & Coveralls
  • Best for full-body visibility needs (e.g., roadside workers, rail workers)
  • Provides additional protection from dirt, weather, and hazards
  • Must be paired with Class 2 or 3 tops to meet higher safety standards
• Waterproof Hi-Vis Clothing (EN 343 Rated)
  • Best for outdoor workers in wet conditions
  • Designed with breathable, waterproof fabrics to keep you dry
  • Look for sealed seams to prevent water penetration
• Hi-Vis Gloves & Accessories
  • Best for handling materials in low-light areas
  • Available with thermal insulation or impact protection
  • Hi-vis hats, arm bands, and backpacks provide extra visibility

Caring for Your Hi-Vis Clothing

• Regular Washing & Cleaning: Dirt and grime reduce visibility—wash hi-vis clothing according to the manufacturer’s instructions.
• Inspect for Wear & Tear: Check garments before each use for fading, rips, or damaged reflective strips.
• Avoid Modifications: Never cut or alter hi-vis garments, as this reduces compliance with safety standards.

Where to Buy Certified Hi-Vis Workwear

• Choose suppliers that provide certified hi-vis gear (look for UKCA/CE marking).
• Ensure a variety of classes and styles to suit different job roles.
• Look for bulk discounts if purchasing for a team or company.

Final Thoughts: Stay Safe & Visible

Hi-vis clothing is a simple yet vital safety measure that protects workers from accidents in hazardous environments. Choosing the right class, maintaining compliance, and ensuring proper care can make all the difference in keeping you safe on the job.

Need high-quality, EN ISO 20471-compliant hi-vis clothing? View the full Best Workwear Range here