This lightweight exercise wheel is incredible for conditioning and working center muscles. Twofold thick for included security. To utilize, overlay the legs at the knees and fold the legs at the feet while pushing and pulling your abdominal area forward and in reverse, adjusting your weight on the wheel. For a more prominent test, don't enable the knees to touch the ground and adjust on the wheel in board position. The handle holds are cushioned with delicate froth. Plastic structure makes it solid and compact.