Chouyoushin Stretch Belt Rakunaru, Size M Just wear it and sit! Provides refreshing lower back care! Enables various exercises, including psoas muscle, abdominal muscle, and pelvic floor muscle exercises. I purchased this six months ago, but I only tried it once and have been storing it since. I don't believe there are any issues like damage, but I would appreciate it if you understand that it has been stored at home.