I received the Sportneer Balance Board in exchange for honest review from Tomoson. The board is a wheel with a leverage (if that is the right word) under the board. You step on the board and try to balanace yourself. It is not the easiest task to conquer.
The board rotates 360 degrees. The board helps improve support, posture, and coordination. The board also has a built in incline angle. I got this for myself but an added benefit is my kids enjoy trying to balance on the board.
The board works best with socks and/orshoes on versus off because the friction can be rough on the feet.
You can purchase the balance board, using the link above. The board is prime-eligible.