These are the rings used with the Panasonic Korikolan. I am selling them because I have disposed of the main unit. There are two in the image, but you will receive four new ones (2 packs). ● Attachment Rings These attachment rings are made of soft silicone. They can be attached to straps or underwear. Attach the shirt by sandwiching it between the attachment ring and the Korikolan main unit. They can be attached on either the front or the skin side. The strap in the fourth image is not included. Shipping: Free shipping via Yu-Packet Post Mini Panasonic Korikolan Parts Shoulder stiffness Massage Body care Electronics