This is a fidget toy called a Flow Ring or Magic Ring. It's made of metal bands that are connected in a spherical shape, and you can play with it by sliding it up and down your arm or rolling it like a ball. Its characteristic "flowing" motion is used for relaxation and stress relief. When not in use, it can be folded flat and stored in a dedicated pouch. It's made of stainless steel, making it lightweight and durable. Thank you for watching.