Depending on the model and features, barefoot safety shoes can meet protection classes S1, S1P, or S3. Which protection class a specific model meets depends on the protective features it incorporates, not on the barefoot concept itself. The barefoot principle and the regulatory requirements for safety shoes are therefore not mutually exclusive. In the following, this article answers the most important questions regarding protection classes and barefoot safety shoes.

What protection classes are there for safety shoes?

Safety shoes are classified into protection classes S1, S1P, S2, S3, S4, and S5 according to the European standard EN ISO 20345. All classes share a common basic requirement: a toe cap that can withstand an impact of 200 joules. The higher classes build on this foundation and add additional protective features.

An overview of the most important classes:

  • S1: Antistatic properties, energy absorption in the heel area, fuel resistance of the sole. Suitable for dry work environments without an increased risk from moisture or punctures.
  • S1P: All the features of S1, plus a puncture-resistant insert to protect against nails and sharp objects.
  • S2: All features of S1, plus a water-repellent outer material.
  • S3: All features of S2 plus puncture protection. The most comprehensive class for demanding outdoor use in wet conditions and where there is a risk of punctures.
  • S4 and S5: Completely waterproof footwear (e.g., rubber boots); S5 also features puncture protection.

Additional features such as ESD (electrostatic discharge) properties or thermal insulation are labeled in addition to the protection class. ESD is not part of the protection class itself, but rather a separate feature that is indicated separately on the shoe.

What protection class can barefoot safety shoes meet?

Barefoot safety shoes can meet protection classes S1, S1P, and S3. The key factor is that the barefoot concept—that is, a zero-drop sole, a wide toe box, and flexible material—can be technically combined with the protective requirements of the respective standard. The toe cap, the puncture-resistant insert, and other features can be integrated into a design that mimics the feel of walking barefoot.

What this means in practice: A barefoot safety shoe with S1P certification offers puncture resistance and antistatic properties without sacrificing the characteristic features of a barefoot shoe. An S3 model adds water resistance, making it suitable for outdoor use as well. The flexibility of the sole and the width of the toe box are design features that can be incorporated regardless of the protection class, as long as the standard is met.

It’s important to understand that barefoot safety shoes are certified safety shoes in accordance with EN ISO 20345—they are not casual shoes. They do not provide direct contact with the ground, but rather translate the natural feeling of walking into a safe, standards-compliant shoe.

Which protection class is suitable for which work area?

The appropriate protection class depends on the risk assessment for the specific work area. As a general rule, the higher the protection class, the more risks the shoe covers. The choice should always be based on a workplace risk assessment.

A rough guide by application area:

  • S1: Dry indoor areas with no risk of puncture, e.g., production areas near offices, light warehouse work.
  • S1P: Warehouses, manufacturing, logistics. Anywhere where sharp objects on the floor may pose a hazard, but where there is no persistent moisture.
  • S3: Construction sites, outdoor areas, trades. When wet conditions, mud, and the risk of punctures come together, S3 is the right choice.

For electrosensitive areas—such as in the electronics industry or when working with sensitive components—the ESD rating also comes into play. This rating is specified independently of the protection class and can be combined with various classes. The overview of standards and protection classes will help you determine the requirements for your work area.

Does the protection class limit the flexibility of the barefoot shoe?

The protection class does not inherently limit the flexibility of a barefoot safety shoe. Modern advancements in safety footwear technology make it possible to combine standard-compliant protective features with a flexible, barefoot-like design. While the toe cap must withstand certain impact levels, it can be designed so that it does not restrict the natural position of the toes.

Here’s an example: A flexible toe cap made of modern composite materials is significantly lighter and more flexible than traditional steel toe caps, yet still meets the standard. Similarly, a puncture-resistant insert can be integrated into a flexible sole without completely blocking the rolling motion of the foot.

The biggest challenge lies in striking a balance between sole stability and sole flexibility. S3 shoes with puncture protection are generally somewhat stiffer than S1 models, but manufacturers have made significant progress in this area in recent years as well. A well-designed barefoot safety shoe can support a natural rolling motion even in higher protection classes. The right fit plays just as important a role as the protection class itself.

How can you tell the protection class of a safety shoe?

The protection class of a safety shoe is marked directly on the shoe itself, usually on the insole or the upper. The marking follows a standardized format in accordance with EN ISO 20345 and includes not only the protection class but also other characteristics indicated by letter abbreviations.

Here's how to read the label:

  1. Standard specification: EN ISO 20345 confirms that this is a certified safety shoe.
  2. Protection class: S1, S1P, S2, or S3 indicates the basic set of protective features.
  3. Additional abbreviations: Letters such as “E” (energy absorption in the heel area), “A” (antistatic), “WR” (water-repellent upper material), or “ESD” supplement the protection class with specific properties.

Here’s an example: The designation “S3 WR ESD” means that the shoe meets protection class S3, is water-repellent, and provides electrostatic dissipation. When making a purchase, it’s worth reading this designation carefully and comparing it with the requirements of your own risk assessment. You can find more information about barefoot safety shoes and their features directly in our product lineup.

Here's how we can help you choose the right barefoot safety shoe

Here at BAAK, we have been developing safety shoes for over 35 years that are consistently designed with the physiology of the foot in mind. Our barefoot safety shoes are certified to EN ISO 20345 and are available in various protection classes, including S1P and S3. What sets them apart:

  • Zero-drop sole with no heel elevation for an upright, natural posture
  • Extra-wide toe box that provides ample space for the toes and supports their natural alignment
  • Flexible sole and upper materials for a barefoot-like running experience despite standard safety features
  • Patented Baak Go&Relax system, which can support the natural rolling motion and reduce the risk of musculoskeletal strain

Would you like to know which protection class is right for your work environment, or are you looking for a specific model? Contact us directly—we’d be happy to advise you and help you find the right shoe for your needs.

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