Safety classes

EN ISO 20345 and EN ISO 20347: the classes for safety and occupational footwear, what each one means and which properties it includes.

Safety footwear

EN ISO 20345:2022

Safety footwear with a 200 J toe cap. The updated standard adds non-metallic penetration grades (PL/PS) and waterproof classes (S6/S7).

EN ISO 20345:2022, Safety footwear
Property	SB	S1	S1P	S1PL	S1PS	S2	S3	S3L	S3S	S4	S5	S6	S7	S7L	S7S
Protective toecap (200J/15000N)	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Fully enclosed heel	no	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
AAntistatic properties	no	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
EEnergy absorption in the heel area (tested at 20 Joules)	no	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
WPAWater penetration and absorption	no	no	no	no	no	yes	yes	yes	yes	no	no	yes	yes	yes	yes
WRWater resistant	no	no	no	no	no	no	no	no	no	no	no	yes	yes	yes	yes
Cleated outsole	no	no	no	no	no	no	yes	yes	yes	no	yes	no	yes	yes	yes
PPuncture-resistant outsole (metal insert, 4.5 mm nail test)	no	no	yes	no	no	no	yes	no	no	no	no	no	yes	no	no
PLPuncture-resistant outsole (non metal insert, 4.5 mm nail test)	no	no	no	yes	no	no	no	yes	no	no	no	no	no	yes	no
PSPuncture-resistant outsole (non metal insert, 3.0 mm nail test)	no	no	no	no	yes	no	no	no	yes	no	no	no	no	no	yes
Slip resistance on ceramic tile floors with NaLS	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes

Safety footwear

Safety footwear with a mandatory 200 J toe cap. Classes define the additional protective properties.

EN ISO 20345:2011, Safety footwear
Property	SB	S1	S1P	S2	S3	S4	S5
Toe cap (200 J)	yes	yes	yes	yes	yes	yes	yes
Closed seat region	no	yes	yes	yes	yes	yes	yes
Antistatic (A)	no	yes	yes	yes	yes	yes	yes
Energy absorption (E)	no	yes	yes	yes	yes	yes	yes
Fuel & oil resistant outsole (FO)	no	yes	yes	yes	yes	yes	yes
Penetration resistance (P)	no	no	P	no	P	no	P
Water penetration & absorption (WRU)	no	no	no	yes	yes	no	no
Cleated outsole	no	no	no	no	yes	no	yes
All-rubber / all-polymeric	no	no	no	no	no	yes	yes

Occupational footwear

Occupational footwear without a toe cap. The same protective properties apply, minus the toe-cap requirement.

EN ISO 20347:2012, Occupational footwear
Property	OB	O1	O2	O3	O4	O5
Closed seat region	no	yes	yes	yes	yes	yes
Antistatic (A)	no	yes	yes	yes	yes	yes
Energy absorption (E)	yes	yes	yes	yes	yes	yes
Fuel & oil resistant outsole (FO)	no	yes	yes	yes	yes	yes
Penetration resistance (P)	no	no	no	P	no	P
Water penetration & absorption (WRU)	no	no	yes	yes	no	no
Cleated outsole	no	no	no	yes	no	yes
All-rubber / all-polymeric	no	no	no	no	yes	yes

Occupational footwear

Updated occupational standard: non-metallic penetration grades (L/S) and waterproof classes O6/O7.

EN ISO 20347:2022, Occupational footwear
Property	OB	O1	O2	O3	O3L	O3S	O4	O5	O6	O7	O7L	O7S
Closed seat region	no	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Antistatic (A)	no	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Energy absorption (E)	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Penetration resistance	no	no	no	P	PL	PS	no	P	no	P	PL	PS
Water penetration & absorption (WPA)	no	no	yes	yes	yes	yes	no	no	no	no	no	no
Whole-shoe water resistance (WR)	no	no	no	no	no	no	yes	yes	yes	yes	yes	yes
Cleated outsole	no	no	no	yes	yes	yes	no	yes	no	yes	yes	yes
All-rubber / all-polymeric	no	no	no	no	no	no	yes	yes	no	no	no	no

Information is provided for general guidance and is based on the EN ISO 20345 / 20347 standards. Always check the marking on the specific product.