What is the leg strap of ski pants for?

1. The small hook at the bottom of the pants is used to hang on the shoelace or shoe hook at the middle layer of the snowshoe to prevent snow from entering the snowshoe.
2. There are also two layers of ski pants. The small hook of ski pants is in the inner layer of ski pants.
3. The inner layer of the ski pants is placed on the middle layer of the ski shoes. After hooking, tie the outer layer of the ski shoes tightly, and then put the outer layer of the ski pants on the outside of the ski shoes to cover it to prevent snow from pouring into the ski shoes.