Deutsch
Safety footwear is required wherever there is a risk of falling objects, punctures or slips. The markings S1, S2 and S3 on a boot or shoe show which protective features it offers, according to EN ISO 20345. Here is what the symbols mean and how to choose.
The basic requirements
All safety footwear with the S-classification has a protective toe cap that withstands an impact of 200 joules. On top of this basic protection, the categories add features:
- SB: basic requirements only.
- S1: closed heel area, antistatic properties, energy absorption in the heel and oil-resistant outsole.
- S2: as S1, plus water penetration and absorption resistance of the upper.
- S3: as S2, plus a penetration-resistant midsole and a cleated outsole. The best choice for building sites and uneven ground.
Additional symbols
- P: penetration resistance.
- WR: water resistance of the whole boot.
- CI / HI: insulation against cold or heat.
- SRC: slip resistance on ceramic tiles and steel floors, the best rating for slip protection.
- M / AN / E: metatarsal protection, ankle protection, energy absorption at the heel.
Steel, composite or aluminium toe caps?
Steel toe caps are the most robust and inexpensive. Composite and aluminium caps are lighter, do not conduct cold and are metal-free, which matters at airports and in environments with metal detectors. Both types meet the same impact and compression requirements.
Getting the fit right
Try safety footwear on in the afternoon, when feet are slightly swollen, and wear the socks you use at work. There should be about 12 mm of room in front of the toes. Replace boots when the sole is worn, the toe cap is visible or the upper is damaged.