Quick Guide to Delta Plus Safety Shoes Markings
- Eduardo Valencia
- 6 days ago
- 2 min read
When you pick up a pair of Delta Plus safety shoes, you’ll see a lot of markings—S3, SRC, CE, ESD, and more. They look technical (because they are), but they each tell you something important about what those shoes are built to handle.
This guide is a short break down of what those markings mean, why they matter, and how to choose the right pair for your job. No jargon. Just the facts you need. You can also check our line up for Deltaplus Safety Shoes. Breaking Down the Markings: What to Look For on Your Deltaplus Safety Shoes (and Why It Matters) 1. EN ISO 20345:2011 (S3, S2, S1, etc.)
This is the main standard for safety footwear in Europe.
Key Features:
S3: Anti-slip soles, water resistance, penetration resistance, and toe protection.
S2: Similar to S3 but without penetration resistance.
S1: Basic protection with anti-slip soles, shock absorption, and toe caps.
Importance:
Guarantees the basic safety features required for industrial environments.
2. EN ISO 20347:2012
Standard for occupational footwear.
Key Features:
Similar to EN ISO 20345 but without toe cap protection.
Importance:
Suitable for non-industrial professions where protection against hazards like slips is required.
3. CE Marking
Indicates that the safety shoes comply with the European Union's PPE Directive (EU Regulation 2016/425).
Key Features:
Mandatory for all PPE sold in the EU.
Ensures compliance with relevant EN standards.
Importance:
Confirms the product is legally approved for sale in the EU.
4. SRC (Slip Resistance Certification)
Tested for slip resistance on both ceramic tile floors (with water and detergent) and steel floors (with glycerol).
Importance:
Ensures maximum grip in wet and oily conditions.
5. ESD Certification (EN 61340-4-3)
Electrostatic discharge protection.
Importance:
Critical for environments where static electricity can damage sensitive equipment or cause hazards.
6. WRU (Water Resistance of Upper)
Water resistance for the upper part of the shoe.
Importance:
Ensures the footwear is suitable for wet conditions.
7. EN ISO 20344:2011
Testing methods for all protective footwear standards.
Importance:
Confirms the safety shoe has been rigorously tested to meet safety requirements.
8. HRO (Heat Resistant Outsole)
Resistance to contact heat up to 300°C.
Importance:
Ideal for high-temperature work environments.
9. CI (Cold Insulation)
Resistance to contact heat up to 300°C.
Importance:
Ideal for high-temperature work environments.
10. HI (Heat Insulation)
Insulation against heat.
Importance:
Ensures comfort and safety in hot environments.
Safety footwear isn’t one-size-fits-all. The markings on Delta Plus shoes help you match the protection to the job—whether you’re working in a factory, on a construction site, or in a lab.
Next time you’re shopping for safety shoes, don’t just look at the style. Look at the markings. They’re the real difference between just wearing shoes and actually being protected.
Check out our line up for Deltaplus Safety Shoes.