EN ISO 20345 2011

Safety Footwear Standard

The EN ISO 20345:2011 standard sets the minimum safety requirements for protective footwear in Europe. It was developed by the International Organization for Standardization (ISO). Therefore, all certified footwear provides consistent and reliable protection in hazardous workplaces.

Every pair of safety shoes must include toe protection. This protection can withstand a 200-joule impact, which equals a 20 kg object dropped from 1 meter. In addition, manufacturers must certify that all products meet EN ISO 20345:2011.

Safety Footwear Classifications

Footwear certified under older standards (2004 or 2007) must be recertified to meet the 2011 standard. Each classification adds extra features to the previous level.

SB – Basic Protection

SB footwear provides toe protection against a 200-joule impact. This meets the minimum requirement for safety shoes.

S1 – Enhanced Comfort and Protection

S1 includes all SB features, plus a closed heel, heel energy absorption, antistatic properties, and fuel oil resistance. These features improve both comfort and durability.

S1P – Penetration Resistance Added

S1P adds a penetration-resistant midsole to S1 footwear. Therefore, it protects workers from sharp objects on the ground.

S2 – Water Resistance

S2 combines all S1 features with water penetration and absorption resistance. Thus, it is suitable for slightly wet environments.

S3 – Maximum Multi-Protection

S3 includes all S2 features, adds penetration resistance, and a cleated outsole. This makes it ideal for rugged or outdoor workplaces.

S4 – Waterproof Design

S4 builds on S3 by adding a fully moulded polymer or rubber waterproof upper. In addition, it provides complete water resistance and durability.

S5 – Ultimate Protection

S5 includes all S4 features. Moreover, it adds midsole penetration resistance for heavy-duty, high-risk workplaces.

Slip Resistance Ratings

EN ISO 20345 also tests footwear for slip resistance. Ratings include:

  • SRA: Tested on ceramic tile with soap solution.

  • SRB: Tested on steel with glycerol.

  • SRC: Meets both SRA and SRB requirements.