Now Your Feet Can Breathe! The Original Muck Boot Company uses a 100 breathable Airmesh lining which incorporates thousands of tiny vertical fibers that allow air to circulate. Combine this with the waterproof insulated rubber shell and you get unmatched comfort with no sweat or heat build-up. For amazing comfort and warmth, Muck footwear is made with premium CR foam, the same used in professional dry suitsfor deep sea diving. Imagine the weather resistance! Enjoy the benefits of owning a pair of Muck Boots or Shoes for all kinds of work around your home! 100 Waterproof Breathable Lining Slipper Soft Comfort Easy, No Hands On and Off Slip Resistant Outsole Protective Natural Rubber Shell Quick Clean Up Just Hose Off Muck BootThe most sensible waterproof snow-proof, mud-proof footwear you will ever own. Guaranteed. Unisex sizes 7-14, (men's 7 = women's 8).