Bennon CASTOR O2 NM High in a brown finish are high-cut work boots made from Crazy Horse cowhide leather for work and outdoor activities. The metal-free construction, antistatic properties, heel energy absorption and SR slip resistance are complemented by comfortable ABSORBA XTR insoles and the rugged DRAVON outsole. The higher cut provides ankle support.

25+ years of proven equipment and accessories.
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: BENNON
BNN08
PROFIWATER STOP 300 ml Waterproofing Spray by the Bennon. Highly effective waterproofing spray. Repels water, grease, and dust. Prevents stains from water and snow. Protects against deep contamination. Suitable for smooth leather, nubuck, suede, textile, and synthetics.
: BENNON
BNN15
Bennon NANO WATERSTOP 400 ml waterproofing spray is an effective nano-protection treatment that creates a water-repellent barrier against moisture and dirt. It is suitable for footwear, clothing and gear while maintaining the breathability of the material.
: BENNON
BNN26-39
Bennon WARRIOR anatomical insoles are three-component, antistatic and anatomically shaped footwear insoles designed to increase comfort when walking. The heel area features a cushioning element that effectively absorbs impact with every step. The combination of Cambrella, PU, EVA and Poron creates a comfortable insole suitable for work, tactical and...
: BENNON
BNN28
Bennon PROFI CLEAN (75 ml) is a colourless cleaning and waterproofing product for footwear made from natural leather. It simultaneously cleans, softens and protects the leather against water. It is intended primarily for fashionable oiled leathers such as PULL UP and CRAZY HORSE, which feature a distinctive patina effect and are mainly used for fashion...
: BENNON
BNN31
Bennon PROFI POLISH TRANSPARENT (70 ml) is a colourless cream for leather footwear, also suitable for footwear equipped with a climate membrane. The cream concentrate nourishes the upper material, keeps it supple and protects it against moisture. The colourless formula is suitable for various colours of leather footwear as it does not alter their colour.
: BENNON
BNN32
Bennon THERMA INSOLE are insulated trim-to-fit footwear insoles designed for cold weather. They combine fleece felt, polyethylene foam and aluminium foil, which provides thermal insulation and helps protect the feet against the cold. The insoles are 300 mm long and can be trimmed using the pre-marked template to fit sizes 36–46.
: BENNON
BNN33
Bennon WOOL INSOLE are winter trim-to-fit footwear insoles with 30% sheep wool. The wool provides excellent thermal comfort and can absorb up to 80% moisture, helping to maintain a pleasant feeling of dry feet. The bottom aluminium foil provides thermal insulation. The insoles are 300 mm long and can be trimmed to sizes 36–46.
This expert product description was prepared by the ANAREUS.cz expert team. All rights to this unique content are bound to the anareus.cz domain.Bennon CASTOR O2 NM High are high-cut work boots designed for all-day wear, work and movement over uneven terrain. The upper is made from durable Crazy Horse cowhide leather, complemented by a breathable MESH fabric lining. The higher cut provides support and stability around the ankle. The CASTOR O2 NM High model is completely free of metal components, making it suitable for environments where metal-free equipment is required (security work). The footwear also has antistatic properties that allow controlled dissipation of electrostatic charge, while the construction absorbs energy in the heel area, helping to cushion impacts generated while walking. Contact with the ground is provided by the DRAVON outsole made from EVA and rubber with a rugged tread pattern. It meets the requirements for SR slip resistance, which is tested using a ceramic tile with glycerine to simulate a contaminated and slippery surface. The front of the boot also features scuff protection to help protect the heavily stressed toe area.
The footwear contains no metal components and is also suitable for environments where metal-free equipment is required.
The durable upper made from full-grain Crazy Horse cowhide leather is complemented by toe scuff protection for increased durability of the heavily stressed front section of the boot.
The outsole meets the requirements for SR slip resistance and provides increased grip on smooth and slippery surfaces.
The antistatic design limits the build-up of electrostatic charges and allows their controlled dissipation.
The ABSORBA XTR insole supports comfort during all-day wear, while the footwear construction provides energy absorption in the heel area.

Metal-free high-cut work footwear made from Crazy Horse cowhide leather with SR slip resistance.
| Size | Internal length (cm) | Foot width (cm) |
| 37 | 24.6 | 8.6 |
| 38 | 25.3 | 8.8 |
| 39 | 26 | 8.9 |
| 40 | 26.6 | 9.1 |
| 41 | 27.3 | 9.2 |
| 42 | 28 | 9.4 |
| 43 | 28.6 | 9.5 |
| 44 | 29.3 | 9.7 |
| 45 | 30 | 9.8 |
| 46 | 30.6 | 10 |
| 47 | 31.3 | 10.1 |
| 48 | 32 | 10.3 |
ANAREUS tip: When applying waterproofing treatment to the boots, cover the plastic eyelets and hooks. According to the manufacturer, the treatment should not come into contact with plastic components to prevent damage or changes in their appearance. For Crazy Horse leather, we offer the Bennon PROFI CLEAN waterproofing and cleaning product.
Yes. The higher cut provides ankle support, while the rugged tread pattern of the DRAVON outsole is designed to provide stable footing even on uneven, slippery or rocky surfaces.
When applying a waterproofing treatment, the manufacturer recommends covering the plastic eyelets and hooks. The treatment should not come into contact with the plastic components, as it could cause damage or alter their appearance.
Compare the length and width of your foot with the provided size chart. When choosing work footwear, also take into account the socks you will normally wear with the boots.
| Variants | CASTOR O2 NM (High) |
| Color | Brown |
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