Balance strips come in a variety of colors and sizes. This set includes 4 straight boards and 4 corners that support up to 220 pounds. The balance strips are lightweight so kids can create their own customizable obstacle course indoor and outdoor setting. The stones have pre-installed rubber feet which prevent sliding on a variety of surfaces. The kit also includes 6 extra replacement feet to prevent future accidents. Parents: it’s time to step up your game! Give kids an awesome on-their-feet challenge to better strength and balance!