Ninja Balls are one of the top training devices for building forearms and grip strength on the Ninja line hanging backyard obstacle course. Switch up your course with the hanging strap which allows for full shoulder rotation. Build core and overall strength and increase self confidence with the The Ninja line and accompanying Ninja Balls. Convenient and portable, take to the park or on a camping trip with including storage bag.
Ages 5+, Max weight 113kgs; Adult supervision required