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. * 5mm CR Flex-Foam * Breathable Airmesh Lining * Extended Rubber Coverage * Angled Topline * Achilles Reinforcement * Aggressive Waffle High Traction Outsole CR Flex-Foam adjusts to the unique contours of your foot to create a comfortable and stable foundation while resisting 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