BENNON Castor O2 NM durable high shoes
BENNON Castor O2 NM durable high shoes
Delivery in 14 days

The table continues to the right — swipe sideways. The size column stays in place.
| Size (EU) | Foot length in cm (A) | Inner shoe length in cm | Foot width in cm |
|---|---|---|---|
| 37 | 23,6 | 24,6 | 8,6 |
| 38 | 24,3 | 25,3 | 8,8 |
| 39 | 25,0 | 26,0 | 8,9 |
| 40 | 25,6 | 26,6 | 9,1 |
| 41 | 26,3 | 27,3 | 9,2 |
| 42 | 27,0 | 28,0 | 9,4 |
| 43 | 27,6 | 28,6 | 9,5 |
| 44 | 28,3 | 29,3 | 9,7 |
| 45 | 29,0 | 30,0 | 9,8 |
| 46 | 29,6 | 30,6 | 10,0 |
| 47 | 30,3 | 31,3 | 10,1 |
| 48 | 31,0 | 32,0 | 10,3 |
Dimension A is the length of your foot in centimetres, not the inner length of the shoe — do not add anything to the measured value. Measure your foot standing up, preferably in the second half of the day, when it is at its largest. If your value falls between two sizes, we recommend the larger one. The inner shoe length is a dimension of the shoe itself and is longer than the foot — do not choose your size by it. We calculated the foot length using the manufacturer's rule: inner shoe length minus 1 cm.
You will find the guide on how to measure your foot correctly here: How to measure your foot and choose the right size.
Specification
Specification
Comfortable, durable ankle footwear for the outdoors, for work and for longer hikes – ideal from spring to autumn.
Whether you are heading to work, into the forest or on a mountain trek, CASTOR O2 NM High will not let you down. This higher ankle footwear combines durability, comfort and style in one. The upper of quality Crazy Horse full-grain leather not only looks good but also copes with rougher treatment. The footwear is also breathable, which you will appreciate especially on warmer days – your feet stay fresh and comfortable even during all-day wear.
The higher cut provides the necessary ankle support and reduces the risk of injury on uneven ground. Thanks to the off-road outsole tread with a slip-resistant finish, you can rely on a stable step even on slippery or stony surfaces. The front of the footwear is protected against knocks, which guarantees a longer life even in demanding conditions.
- Durable upper made of Crazy Horse full-grain leather
- Breathable construction for all-day comfort
- Higher cut for better fixation and ankle protection
- Slip-resistant outsole for confidence in demanding terrain
- Toe bumper protection for a longer life
When treating the footwear with an impregnation spray, we recommend covering the plastic eyelets and hooks. The impregnation agent should not get onto plastic parts so that they are not damaged or discoloured.
Key features
- Footwear with no metal parts – Footwear containing no metal parts – suitable for environments that require metal-free equipment.
- Antistatic footwear – Material properties that prevent electrostatic charges from building up on the surface of the body or clothing and allow the charge to be dissipated in a controlled way.
- Energy absorption in the heel area – The ability of the outsole and insole to absorb the impacts caused by walking.
- Odolnosť proti pošmyknutiu SR – The outsole is tested on a ceramic tile with glycerine, simulating a dirty, slippery surface.
Technical specifications
| Parameter | Value |
|---|---|
| Safety class | O2 |
| Standard | EN ISO 20347 |
| Upper material | Crazy horse cowhide leather |
| lining | MESH fabric |
| insole | ABSORBA XTR |
| outsole | DRAVON / EVA/rubber |
| Slip resistance | SR |
| Non-metallic | yes |
| Size range | 37 – 48 |
| Weight | 1 074 g / pair (size 42) |
| Manufacturer code | 1094040240 |
| Manufacturer | BENNON |
How to measure your foot and choose the right size
What to watch out forShoe sizes are not standardised. Every manufacturer builds on a different last, with a different instep height, a different toe shape and a different width. The number from your previous shoes therefore need not apply. The only reliable basis is the length of your foot – measure it before you buy.
Step 1: TracingTake off your socks. Place a sheet of paper against the wall and stand on it so that your heel touches the wall. Trace the outline of your toes with a pencil – hold the pencil exactly vertical, otherwise you will measure too much. Measure both feet, they differ in length, and measure in the late afternoon, when the foot has spread over the course of the day.
Step 2: Measure and find your sizeMeasure the distance from the edge of the paper (the heel) to the longest toe – it need not be the big toe. Go by the longer foot. Find the measured value in cm in the size chart. Do not add anything; the room needed inside the shoe is already included in the size chart.
When trying the shoes on
- Try them on in the socks you will wear with them. On duty and in the field these are considerably thicker socks than for everyday wear.
- If your length falls between two sizes, choose the larger one. A short boot cannot be broken in, a larger one can be adjusted with a sock or an insole.
- Your toes must not hit the front – neither when standing nor when stepping down a stair. The heel must stay in place without lifting.
Material and care
Material and care
30-day returns
30-day returns
We offer a 30-day period for returning or exchanging goods if, for any reason, you are not satisfied with your order.
For more information, please see our Return Policy here.
Delivery
Delivery
Orders received by 14:00 are dispatched the same day. Delivery usually takes place on the next business day, depending on the selected shipping method. During busy periods, please allow 1–3 business days for order processing.
Free delivery from €200 / for oversized shipments from €400
Free of charge, ready for pickup on the next business day
For more information, please see our Delivery page.
Payment details are processed through a secure system.