Memory foam footbeds contour to unique arch shapes over time

100% Waterproof
Fully lined with 5mm CR Flex-Foam neoprene, 100% waterproof with exceptional comfort, flexibility, shock absorption and heat retention properties; adjusts to the contours of your foot to resist blisters and chafing
Fleece lining for additional warmth
2mm thermal foam under the footbed for extra warmth
Lightweight, cushioned EVA midsole for added comfort
MS-1 molded outsole is rugged, aggressive and durable for maximum protection and stability
Pull-tab for easy on and off
Estimated height: 33cm/ 13"
Estimated max calf circumference: 41cm/ 16.1"
Comfort Range: -40F to 40F / -40C to 4C

This frame improves breathable design