The yamato sandal is part of our genuine leather collection and is clinically proven to boost energy & blood circulation ease fatigue and improve your overall mood! medical research has shown that wearing kenkoh on a regular basis promotes health and well-being. our uniquely designed healthy footwear works to improve a range of medical conditions from joint pain to circulation. ideal for everyday wear you can walk your way to better health with kenkoh! our clinically proven research involves participants wearing different types of footwear for up to four hours at a time and monitoring the impact on participants across a range of health indicators. in march 2006 the research findings concluded that those participants who had been wearing kenkoh sandals experienced a range of health benefits over those who hadn't kenkoh customers have also reported that kenkoh sandals have helped with a range of conditions such as diabetes plantar fasciitis flat feet bunions back pain and sciatica.