Use the heavy-duty CanDo® balance board to strengthen and condition lower body. Improve ankle range-of-motion, balance, body awareness, and develop joint mobility and reaction skills. Balance board is durable, heavy-duty, and non-skid. The balance board is made of a strong but lightweight plastic for portability. Made in the USA. Board can be adjusted to change instability level or change board from wobble to rocker or rocker to wobble. Includes two 2" high instability balls for medium difficulty; not too easy for students, but not too difficult to be discouraging. Green 2" instability balls provide medium difficulty. Call our customer service for additional options to increase or decrease the level of difficulty. Also available as a 15" x 18" rectangular board.