The angled topline offers a more comfortable fit around the calf while the extended rubber upper offers additional protection. This boot will be a classic for years to come. It features 5mm CR Flex-Foam for comfort and stability, a breathable Airmesh lining, and extended rubber coverage for extra protection. The boot has an angled topline and Achilles reinforcement for a better fit and support. The aggressive waffle high traction outsole provides excellent grip. CR Flex-Foam conforms to your foot's unique contours, creating a comfortable and stable foundation while preventing blisters and chafing. Upper: Rubber/Neoprene; Lining: Breathable Airmesh; Sole: Rubber. Care Instructions: Clean with cold water and use rubber boot care. Heel Height: 2.0 cm.