Patented worldwide! New concept belt focusing on the iliopsoas muscle, the iliopsoas muscle relaxation belt "Rakunal". Supports an ideal sitting posture with no burden on the lower back by using the power of strong rubber to compensate for posture and replace the iliopsoas muscle. It is useful in a variety of situations, from nursing care prevention to athlete training. ◎Improvement of back pain prevention for employees ◎Prevention of nursing care for middle-aged and elderly ◎Improvement of desk-work back pain ◎Muscle strengthening for the elderly ◎Support for power rehabilitation ◎Posture compensation for children ◎Sitting position and posture maintenance for disabled persons