The Kerbl 347674 NORAMAX O4 work boots in size 40 are designed for optimal comfort and safety in demanding environments. Crafted from high-quality polyurethane, these boots are lightweight, flexible, and highly durable. They are fully waterproof and provide excellent cold insulation down to -20°C, making them ideal for agricultural, horticultural, and other wet or cold conditions. The non-slip sole ensures secure footing on various surfaces, while the material offers resistance to oil, acid, and petrol. These O4-rated boots do not feature a safety toe cap or midsole.