2mm airmesh network wicks saturated air to the exterior of the boot. Fully waterproof to the very top of the boot. A boot for all temperatures including thermal protection down to -40°c. Fibre glass non-metallic toe cap: 200J EN 12568. Resistant to fuel oil and hydrocarbons. Designed for all day wear; supports natural posture and spinal alignment, reducing wear and tear on lumbar vertebrae. Excellent stability on rough/ uneven ground. superb grip on typically hazardous surfaces such as wet rock and wooden sleepers. Flexible kevlar non-metallic penetration resistant midsole: 1100N EN 12568.