The Playtime™ shoulder twirl has two rotary wheels with each wheel turning in a different direction. This exercise employs the full flexibility around the shoulder and the muscles that raise and lower the arms to provide shoulder stability. The Arihant Playtime™ outdoor gym equipment is designed to make fitness a way of life. It encourages exercise while making it fun and favorable for overall health and happiness. All the equipment is structured on the light-and-convenient principle which makes it an immediate must-have in any outdoor playground environment.