OCCUPATIONAL FOOTWEAR – OCCUPATIONAL SAFETY
Certifications
Here are the certifications we hold and the protection each one provides, so you can choose the correct model for every job position.
BEFORE GOING INTO DETAIL
How to read a certification
Family
The base letter indicates whether the footwear has a protective toe cap or not.
Combined level
The number indicates how many safety properties that level adds, in a cumulative manner.
Individual extras
Some properties are not included in the combined code and are indicated separately on the product data sheet.
19 TECHNICAL PROPERTIES
Properties we certify
These are the individual properties that a WRK model can feature, grouped by the benefit they provide to the user. They are combined with each other to form the SB–S7 and OB–O7 levels shown below.
Structural protection
P
Penetration resistance
The sole features a metallic midsole that prevents nails or sharp objects from penetrating from the ground.
PL
Non-metallic penetration resistance
Same protection as P, with a non-metallic midsole: lighter and without interfering with metal detectors.
PS
Non-metallic penetration resistance (PS type)
Non-metallic variant of penetration resistance, with a different requirement level than the PL type.
AN
Ankle protection
Reinforcement in the collar that protects the ankle against bumps, sprains, or lateral impacts.
MF
Metal Free
Without metallic components: does not interfere with metal detectors or security gates (airports, industrial plants).
M
<span data-metadata=""><span data-buffer="">Metatarsal protection
Reinforcement over the instep that protects the metatarsal bones against impacts or falling heavy objects.
AN
Ankle protection
Reinforcement in the collar that protects the ankle against bumps, sprains, or lateral impacts.
CR
Cut resistance
The upper material resists accidental cuts from tools or sharp objects.
MF
Metal Free
Without metallic components: does not interfere with metal detectors or security gates (airports, industrial plants).
Resistance and grip
SC
Scuff cap abrasion resistance
The toe cap resists rubbing and repeated wear without opening or deteriorating.
SR
Slip resistance
Certified grip on ceramic tile with glycerin: ideal for kitchens, cleaning, and slippery floors.
LG
Ladder grip
Sole designed for climbing and descending ladders and inclined surfaces safely.
FO
Resistance to fuel oil
The sole does not degrade in contact with oils, greases, or fuels.
WPA
Water penetration and absorption
The upper of the shoe limits the amount of water that enters and that the material absorbs.
HRO
Resistance to hot contact
The sole withstands direct contact with hot surfaces without deforming or melting.
Comfort, climate, and electricity
A
Antistatic footwear
Dissipates static electricity accumulated in the body, reducing the risk of sparks and discharges.
ESD
Controlled electrostatic dissipation
Stricter electrical resistance range than “antistatic”: protects sensitive electronic components and environments with explosion risks.
HI
Heat insulation of the sole complex
Protects the foot from heat rising from the ground in high-temperature environments.
CI
Cold insulation of the sole complex
Protects the foot from the cold ground in cold storage rooms or frozen outdoor areas.
E
Energy absorption in the heel
The heel cushions the impact when walking, reducing fatigue during long days on your feet.
WR
Water resistance
The entire shoe—not just the sole—resists water and keeps the foot dry.
- Closed heel area
- Energy absorption in the heel (E)
- Antistatic (A)
- Penetration resistance, depending on the type of midsole (P, PL, or PS)
- Water penetration and absorption (WPA)
- Penetration resistance, depending on the type
- Cleated outsole
- Water resistance of the whole shoe (WR)
Don't know which level your team needs?
Tell us about the work environment—construction site, warehouse, kitchen, cold storage, clean room—and we will tell you which combination of properties and WRK model fits.