Carhartt 400021 Greenfields Rugged Flex 02 Occupational Dark Brown Black Work Boot Sizes Uk 4-12 PPE Workwear
Carhartt 400021 Greenfields Rugged Flex O2 Occupational Work Boot | Dark Brown / Black | Sizes UK 4–12 | PPE Workwear | Trade In Timber EXTRA
The Carhartt Greenfields Rugged Flex O2 Work Boot is engineered for demanding occupational environments where comfort, flexibility and durability are essential. Built from hydro-treated full-grain leather with Carhartt’s signature Rugged Flex™ technology, this boot moves with you while providing dependable protection and long-lasting performance.
With a removable anti-odor footbed, lightweight stability shank, heat-resistant outsole and certified occupational protection, Greenfields offers the perfect balance of all-day comfort and hard-wearing reliability—ideal for workers across multiple industries.
Now available on Trade In Timber EXTRA with Fast Nationwide Delivery.
⭐ Key Features & Benefits
💪 Rugged Flex™ Technology
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Designed to flex and move with your foot
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Enhances mobility throughout the workday
💧 Hydro-Treated Full Grain Leather Upper
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Water-resistant and durable
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Built to withstand tough weather and harsh conditions
🌬️ Breathable Mesh Lining
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Improved airflow
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Keeps feet cooler and fresher
🧵 Reinforced Metal Components
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Coated iron eyelets
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Durable lace-up construction for long-term wear
🦶 High-Comfort Removable Footbed
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Energy-absorbing heel
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Anti-odor and moisture-absorbing properties
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Improves overall comfort during long shifts
🥿 PU-Injected Midsole
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Lightweight cushioning
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Reduces foot fatigue
🔥 Heavy-Duty Rubber Outsole
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Oil-resistant
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Fuel oil-resistant (FO)
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Heat resistant to 300°C (HRO)
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Heat insulation HI (30 min at 150°C)
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Exceptional grip and stability
🛠️ Ideal For:
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Engineering & Manufacturing
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Light & Medium Trades
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Warehouse & Logistics
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Facilities & Maintenance
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Security & Patrol
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General Occupational Use (Non-Safety Toe)
📦 Why Buy From Trade In Timber EXTRA?
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Trusted UK supplier of Workwear, PPE & Safety Footwear
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Huge range of brands including Carhartt, U-Power, Puma, Apache, Buckler, Helly Hansen & more
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Fast Nationwide Delivery
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VAT invoice with every purchase
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Dedicated customer service
🔍 Technical Specification
| Feature | Details |
|---|---|
| Model | Carhartt 400021 Greenfields |
| Category | EN ISO 20347:2022 (O2) Occupational Boot |
| Upper | Hydro-treated full grain leather |
| Lining | Breathable mesh |
| Footbed | Removable, anti-odor, energy-absorbing heel |
| Midsole | PU-injected for lightweight comfort |
| Outsole | Rubber (oil-resistant, HRO 300°C, FO, HI) |
| Technology | Rugged Flex™ |
| Fit | Regular |
| Support | Lightweight stability shank |
| Sizes | UK 4–12 |
✔️ Summary
The Carhartt Greenfields Rugged Flex O2 Work Boot delivers exceptional occupational performance with a flexible, durable and comfortable design. Perfect for workers who need reliable non-safety footwear with advanced resistance properties and premium build quality.
Available now from Trade In Timber EXTRA — with Fast Nationwide Delivery.
Trade In Timber EXTRA-
(online purchase-nationwide delivery)
Lead time of 2-4 working days, but some items or addresses may take 7-10 working days.
Your delivery charge will be displayed in the trolley page at checkout prior to purchase.
Once the order has been purchased a member of our team will be in contact to discuss delivery.
The products ordered are for kerbside delivery only which means our drivers will unload goods at the nearest access point on the kerb outside of your property.
You can also collect timber from our Timber Yard. Our address is Power Station Rd, Minster on Sea, Sheerness, Kent ME12 3AD
We are open:
Monday - Friday 9am - 3pm
Saturday 9am - 1pm
Sunday closed
Huge savings can be made buying some of our products in bulk. Take a look at our bulk offers to see how much you can save.