EN ISO 20347:2012 – Personal protective equipment – Occupational footwear

Cat    Class           Requirements
OB            1/2        Basic requirements (no toecaps)
01             1           OB + A + E + Closed heel
02             1           OB + A + E + WRU + Closed heel
03             1            OB + A + E + WRU + P + Closed heel + Cleated sole
04             1/2        OB + A + E + WRU + P + Closed heel + Cleated sole
05             1/2        OB + A + E + WRU + Closed heel + Cleated sole