A snowboot 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.
Snowboots are used in wet, slushy, muddy, and snowy situations.
[1] 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.