Muck Boot® Men's Muckster II is ideal for any chore or task where there is mud, slush or rain. Easy to slip-on and quick to kick-off, makes it a great "leave by the back door" boot. Slip them on and you will always feel dry and comfortable. 100% waterproof 4mm Neoprene and Rubber upper Breathable air mesh lining Comfort topline High traction, self-cleaning Rubber outsole built for the Lawn and Garden Product Features: Outsole:High traction Rubber Lining:Breathable Mesh Upper:4mm CR Flex-Foam Comfort Range:Sub freezing to 65°F Muck Boot Men's Muckster II Ankle Boot