You can enjoy different STYLES by adjusting the position of the decorative rings to suit your preference and the occasion. Six 140mT (1400G) rare earth permanent magnets are embedded in the silicone to surround the neck. With a clean and light feel, it improves blood circulation in the neck and shoulders, and relieves muscle stiffness. Five stainless steel decorative rings, which are rust-resistant and gentle on the skin, are included. The decorative rings are movable, allowing you to change their position to suit your preference and the occasion, and enjoy different STYLES. It has a resin clasp that is easy to attach and detach, and is designed to be fastened at the back. The clasp and silicone are the same color to create a sense of unity, and do not interfere with the wearing scene. The 5mm diameter loop uses water-resistant silicone. It can be worn in a wide range of everyday situations. Shoulder stiffness relief goods, magnetic accessories, measures against cold sensitivity, improved blood circulation - Brand: Celantotte - Size: Large, approx. 51cm - Color: Black Purchased at a large sporting goods store. Used infrequently and stored at home. Please understand that this is a used item before purchasing.