Currently used by 4 Japapanese Professional Baseball Teams, Leading Judo Teams (i.e. Kokushikan University, Tokai University, AsahiKasei), Japan's National Table Tennis Team, and leading Marathon, Skating, and Rugby Teams. Derived from Japanese Martial Arts Sumo Flexcushion makes it easier to stretch adductor, hamstring, and muscles around hip joint by keeping your pelvis at neutral position. It is derived from Japanese Martial Arts Sumo's MATAWARI (Splits) Training. For Stretch, Mat Pilates, and Yoga Japan's several Top National Chain Health Clubs, many other Health Clubs, and Pilates Studions including "Pilates on Fifth" in New York City, are using Flexcushion for Stretch, Mat Pilates, Yoga, and Training.