Trainermat’s Trainerball is a fitness ball designed to strengthen the body’s core. The Trainerball simplifies the process of exercising by illustrating step-by-step instructions for the most effective core-strengthening routines directly on the ball. Trainerball comes in two different designs: a red, 55-cm ball for heights 5’5 and below and a black, 66-cm ball for heights 5’6 and above. Trainerball can be purchased for $30 at trainermat.com.
Exercise Product: Fitness Ball