Air-Conditioning Channel 4.0: Air-conducting 3D structures and high-tech specialty yarn promote intensive ventilation of the feet. Active Cuff: Adapts flexibly to the leg circumference. Optimal fit without slipping or forcing. Heel Protector: Effective protection against friction, pressure, and impacts through anatomical protection at the heel. Toe Protector: Dampens pressure, adapts to the asymmetrical foot shape, protecting against blisters and friction.