Shimofuku Slim Swing Active Pass your ankles through and secure with the Velcro straps. By rolling back and forth while sitting with your legs extended, you can correct your posture. I purchased this from Shop Channel several years ago. I haven't used it much. How about using it for exercise while doing other things? Please refrain from purchasing if you are sensitive to items that have been stored at home. Pelvis, Posture correction cushion,