These boots are definitely not waterproof; I would not even call them water resistant. While they seem pretty warm, as soon as you step into any type of ice or snow (don't even try rain or slush), your feet will be wet and very cold. These boots have a seam directly around bottom edge of the toe close to the sole of the boot. Thermolite insulation aside, this seam makes the rest of the boot worthless as water and cold immediately come right in along the stitching. Within about 1 minute of stepping in snow, my toes were cold. As soon as there was time for the moisture to soak through sock liners and two pairs of insulated ski socks, I realized that my toes were cold not due to poor insulation, but because they were wet with freezing cold water. I don't mean that my toes were a little cold; I mean that my toes were aching with cold in less than five minutes. I am an adult who has worn many pairs of generic or even cheap snow boots, but I paid $40 for these at a ski store thinking that I got a deal and they are the worst snow boots I have ever worn in over 30 years. You are better off wearing plain old rain galoshes with several pairs of socks than wasting your money on these. As long as your feet are dry, they will be warmer than wearing these very nicely insulated but leaky boots.