BASIC REQUIREMENTSEN ISO 20345EN ISO 20347

slip resistance (SRA, SRB, or SRC)

SBOB

energy absorption of toe cap

200 joules-
ADDITIONAL REQUIREMENTS

closed heel area // antistatic // energy absorption of heel area

S1O1

the same as for S1/O1 // plus water penetration and water absorption

S2O2

the same as for S2/O2 // plus penetration resistance and cleated outsole

S3O3

! EN ISO 20345:2011 valid since December 2011 !
! EN ISO 20347:2012 valid since February 2012 !

Requirements
(Extract from the standards)
SBS1S2S3OBO1O2O3
BASIC REQUIREMENTS        
toe protection (200 joules)     
slip resistance (SRA, SRB or SRC)
         
ADDITIONAL REQUIREMENTS        
penetration resistance (P)

antistatic property (A)
energy absorption of heel area  (E)
         
UPPER        
water penetration and water absorption (WRU)  
         
OUTSOLE        
reaction on contact heat (HRO)
fuel resistance (FO)