Comfort shoes can be divided into two broad categories – non-orthopedics and orthopedics – according to the presence/absence of arch support. Klas & Sylph is embedded with arch support, so it belongs to the orthopedics category.
Orthopedics footwear is NOT the same as toning shoes. Toning shoes belongs to non-orthopedics category that promotes “good health” through physical exercise. Unlike athletic shoes, however, toning shoes have raised considerable skepticisms and been involved in numerous false-advertising lawsuits concerning the accuracy of their claimed effectiveness in toning buttock and calf muscles.
In contrast, orthopedics footwear are not made for exercising purpose but rather made to improve body alignments and alleviate foot pain conditions. Orthopedics footwear is based on real science, not marketing gimmick.