It's called a condom. just kidding, they're called Snowshoes.
Eskimos wear snowshoes to help keep their feet warm.
Because your feet don't have a very big surface area. If you've seen eskimos with those big 'tennis racket' shoes.. its to spread their weight out so that theres less pressure thus, helping you to stay on the surface of the snow(':
Thy are the biggest member of the weasels family. They have big flat feet their feet keep them from sinking in the wter. They can grow up to be 87 centimeters tall.
When worn properly a life jacket can keep you from sinking even if you are unconscious.
To keep your shoes on your feet, for one thing!
According to experts, most Eskimos dwell in snow-shaped domes in the Arctic called igloos. Contrary to its appearance, the igloos keep Eskimos warm and comfortable inside.
To keep their food from going bad.
To keep from sinking and capture more light.
Walk on hard ground. There is no way to keep them from sinking in soft or grass areas. You have to watch where you step.
Make sure there are no holes
It means to keep from sinking a fluid such as water. To keep afloat.
The swim bladder