They have a function to generate some heat with physical movement.
They have 25 grade pressure for example 13hPa on an ankle, 6hPa on a calf, 5hPa on a thigh.
The abdomen and the buttocks are three-dimensional.
They have a measures against a stench of the feet, bacteria and static electricity.
The toes are transparent.
Material: nylon, polyurethane