A snow boot is a type of boot, generally waterproof, or water-resistant. The boot, in almost all cases, has a high side, keeping snow from entering the boot, and a rubber sole, to keep water out. Because of their water-resistant material, snowboots are often used in wet, slushy, or muddy situations. This means not a half inch dusting of snow, of water, but quite deep, heavy wet snow, slush, or mud.
Snowboots are used by people to easily walk in snowy or wet situations, and by children playing in snowy, relatively wet, or muddy lawns, fields, etc. They are also usable for walking in streams in winter, as they are well-insulated, while still waterproof.