Approved by The Royal College of Podiatry. Recommended by podiatrists, medical doctors and yoga instructors alike, this health-friendly sandal incorporates toe separators to allow for freedom of movement.This helps the bones and muscles in the feet to become more mobile, as naturally intended. So you’re re-training your toes to spread out as you walk, which in turn, helps improve posture, balance and overall foot health. Also great for keeping your freshly painted pedicure intact! Patent# 6,151,801