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Choosing the correct safety footwear is about more than the toe cap. The markings below explain protection against penetration, water, slipping, heat, cold and other workplace hazards.

Important: These ratings are a guide. Always check the marking and full specification shown on the product, and select footwear using your workplace risk assessment.

Safety footwear categories — EN ISO 20345:2022

The category codes are cumulative. For example, S3 includes the S2 features plus penetration resistance and a cleated outsole. The letters P, PL and PS identify different penetration-resistant inserts and test-nail sizes.

SB

Basic safety protection

  • 200-joule protective toe cap.
  • Meets the basic requirements for safety footwear.
SBP

Basic protection + P

  • SB protection.
  • Metallic penetration-resistant midsole (P).
SBL

Basic protection + PL

  • SB protection.
  • Non-metallic penetration-resistant insert tested with a 4.5 mm nail (PL).
SBS

Basic protection + PS

  • SB protection.
  • Non-metallic penetration-resistant insert tested with a 3.0 mm nail (PS).
S1

Dry-workplace protection

  • 200-joule toe cap.
  • Closed heel area.
  • Antistatic protection.
  • Energy absorption in the heel.
S1P

S1 + metallic midsole

  • All S1 features.
  • Metallic penetration-resistant midsole (P).
S1L

S1 + PL insert

  • All S1 features.
  • Non-metallic penetration-resistant insert tested with a 4.5 mm nail (PL).
S1S

S1 + PS insert

  • All S1 features.
  • Non-metallic penetration-resistant insert tested with a 3.0 mm nail (PS).
S2

S1 + water-resistant upper

  • All S1 features.
  • Upper tested for water penetration and absorption (WPA).
S3

S2 + metallic midsole

  • All S2 features.
  • Metallic penetration-resistant midsole (P).
  • Cleated outsole.
S3L

S2 + PL insert

  • All S2 features.
  • Non-metallic penetration-resistant insert tested with a 4.5 mm nail (PL).
  • Cleated outsole.
S3S

S2 + PS insert

  • All S2 features.
  • Non-metallic penetration-resistant insert tested with a 3.0 mm nail (PS).
  • Cleated outsole.
S4

Waterproof polymer/rubber footwear

  • 200-joule toe cap.
  • All-rubber or all-polymeric construction.
  • Antistatic protection.
  • Energy absorption in the heel.
S5

S4 + metallic midsole

  • All S4 features.
  • Metallic penetration-resistant midsole (P).
  • Cleated outsole.
S5L

S4 + PL insert

  • All S4 features.
  • Non-metallic penetration-resistant insert tested with a 4.5 mm nail (PL).
  • Cleated outsole.
S5S

S4 + PS insert

  • All S4 features.
  • Non-metallic penetration-resistant insert tested with a 3.0 mm nail (PS).
  • Cleated outsole.
S6

S2 + whole-footwear water resistance

  • All S2 features.
  • Whole footwear tested for water resistance (WR).
S7

S3 + whole-footwear water resistance

  • All S3 features.
  • Whole footwear tested for water resistance (WR).
S7L

S3L + whole-footwear water resistance

  • All S3L features.
  • Whole footwear tested for water resistance (WR).
S7S

S3S + whole-footwear water resistance

  • All S3S features.
  • Whole footwear tested for water resistance (WR).

Additional protection markings

A
Antistatic footwear
AN
Ankle protection
C
Partially conductive footwear
CI
Cold insulation of the sole complex
CR
Cut-resistant upper
E
Energy absorption in the heel/seat area
ESD
Electrostatic-dissipative footwear
FO
Outsole resistant to fuel oil
HI
Heat insulation of the sole complex
HRO
Outsole resistant to hot contact up to 300°C
LG
Ladder grip
M
Metatarsal protection
P
Metallic penetration-resistant midsole
PL
Non-metallic penetration-resistant insert tested with a 4.5 mm nail
PS
Non-metallic penetration-resistant insert tested with a 3.0 mm nail
SC
Scuff-cap abrasion resistance
WR
Water resistance of the whole footwear
WPA
Water penetration and absorption resistance of the upper
WRU
Water-resistant upper (marking used under the earlier standard)

Slip-resistance markings

SR is the current marking used with the 2022 standard. SRA, SRB and SRC may still appear on footwear certified to the earlier 2011 standard.

SR

Current slip-resistance marking under EN ISO 20345:2022. Tested on ceramic tile with glycerine.

SRA

Legacy EN ISO 20345:2011 test on ceramic tile with detergent solution; minimum coefficient of friction 0.32 flat and 0.28 at the heel.

SRB

Legacy EN ISO 20345:2011 test on steel with glycerol; minimum coefficient of friction 0.18 flat and 0.13 at the heel.

SRC

Legacy marking confirming that both the SRA and SRB tests were met.