| footwear classification as per protection level | class identification | ||||||
|---|---|---|---|---|---|---|---|
| EN ISO 20347 – work footwear | OB | O1 | O2 | O3 | |||
|
SB | S1 | S2 | S3 | |||
| symbol | risks covered | ||||||
| basic requirements | x | x | x | x | |||
| SRA* | slip resistance on ceramic floor tiles with NaLS** | x | x | x | x | ||
| SRB* | slip resistance on steel floor with glycerine | ||||||
| SRC* | slip resistance SRA + SRB | ||||||
| closed heel part | o | x | x | x | |||
| A | antistatic properties | o | x | x | x | ||
| E | energy absorption in heel area | o | x | x | x | ||
| FO | resistance of sole to fuels (safety footwear) | o | x | x | x | ||
| WRU | resistance of footwear upper to penetration and absorption of water | o | x | x | |||
| P | resistance of the bottom of the footwear to puncture up to 1100 N | o | o | x | |||
| tread pattern outsole | o | o | o | x | |||
| x | compulsory, basic requirement, it must be met for the given class |
| o | optional, additional requirement, as per the customer’s requirement |
| * | one of three requirements for slip resistance must be met |
| ** | NaLS – solution of sodium lauryl sulphate |
| A | antistatic properties | |
| E | energy absorption in the heel area | |
| FO | resistance of sole to fuels | |
| toe protection against impact up to 200 J and pressure 15 kN |
||
| WRU | resistance of footwear upper to penetration and absorption of water |
|
| P | resistance of the bottom of the footwear to puncture up to 1100 N |
|
| extremely high toe protection to abrasion | ||
| M | metatarsal protection | |
| CI | insulation of sole complex against cold up to -17 °C |
| HRO | resistance of sole to contact heat up to 300 °C |
|
| HI | isolation of sole complex against heat up to 150 °C |
|
| SRA | slip resistance on ceramic floor tiles with NaLS |
|
| SRB | slip resistance on steel floor with glycerine | |
| SRC | slip resistance SRA + SRB | |
| without metal components | ||
| WR | resistance to water | |
| ESD | electronic devices protection from electrostatic discharge |
| UK | 3 | 3,5 | 4,5 | 5 | 6 | 6,5 | 7 | 8 | 9 | 9,5 | 10 | 11 | 12 | 13 |
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
| length | 22,7 | 23,3 | 24,0 | 24,7 | 25,3 | 26,0 | 26,7 | 27,3 | 28,0 | 28,7 | 29,3 | 30,0 | 30,7 | 31,3 |
The size chart indicates the inner length of the shoe in centimeters. We recommend adding an excess of 0.7 cm to the total length of the foot to get the ideal shoe size.