No rips or tears 100% Waterproof 5mm CR Flex-Foam neoprene liner is 100% waterproof with exceptional comfort, flexibility, shock absorption and heat retention properties; adjusts to the contours of your foot to resist blisters and chafing Breathable mesh lining wicks away humidity and perspiration, allowing air to travel throughout the boot bioDEWIX™ antimicrobial footbed insert topcover with NZYM™ for odor control and moisture management Quick cleaning ribbed outsole offers durability and traction on slick surfaces Pull-tab for easy on and off Estimated height: 38cm/ 15in Estimated max calf circumference: 38cm/ 15in Comfort Range: Sub Freezing to 65°F / 18°C