The SANO shoe collection is here to offer a truly new lifestyle experience; one that targets body and soul. The secret lies in the 2-zone technology, a world first, imbedded inside the sole. This unique technology burns excess calories, activates blood circulation, prevents cellulite and tones abdominal, leg and buttock muscles. It also relaxes tense muscles, soothes joints, vertebrae and spinal cord, improves posture and improves physical condition. NOTE: WHEN ORDERING THE WOMEN'S SANO, ESPECIALLY THE CLOSED IN VERSIONS,PLEASE ORDER ONE-HALF SIZE LARGER.