EN ISO 20345 - Safety			ADDITIONAL MARKINGS
SB	Basic requirements (safety, strength, crush and shock resistance : 200 J)		A	Antistatic safety shoe
S1	= SB + closed back + A + E		AN	Ankle protection
S2	= S1 + WRU		CI	Safety shoe with cold insulation of the sole
S3	= S2 + P + sole with studs		E	shock absorber in the heel area of the safety shoe
S4	Closed back + A + E + FO		FO	Safety shoe with oil resistant sole
S5	S4 + P + sole with studs		HI	Safety shoe with thermal insulation of the sole
			M	Safety shoe with metatarsal protection
SOLE GLIDING RESISTANCE			P	Safety shoe with Penetration resistant sole
SRA	Gliding resistance on ceramic tiles covered with a solution of Lauryl sulphate		WR	Water resistant safety shoe
SRB	Gliding resistance on a glycerol-coated steel floor		WRU	Upper resistant to penetration and water absorption
SRC	SRA + SRB		HRO	Safety shoe with heat-resistant outsole by direct contact