5mm CR Flex-foam
Calf-high extended rubber overlay
2mm thermal foam under the foot bed
Cushioning EVA midsole
MS-1 molded outsole
Comfort Range: -20° to 50°F
Muck Shoes: Men who wear half-sizes should move up to the next whole size while women who wear half-sizes should move down a size.
Muck Boots: Customers with a half-size foot should select the whole size down.
Best fit can be achieved by wearing a medium-weight athletic sock. For use with ski socks, fleece or heavy wool socks, select the next size up. Orthotics and molded sockliners can be used with Muck Boots.