Mephisto Yelina PerfThe perforation of the upper material and the extremely lightweight and supple sole provide a light and airy wearing comfort. An adjustable hook and loop strap provides a secure hold and a perfect fit. The Soft Air midsole, flexible and soft, reduces the shock from walking to an absolute minimum. This protects your feet, joints and vertebrae, while maintaining proper hygiene. For a comfortable and effortless walk. Maximum heel protection is achieved