The GYMNIC K-A exercise ball in red color has a 22” diameter and a maximum weight capacity of 600 lbs, making it ideal for semi-commercial gym use. Made from synthetic resin materials and plastic, this burst-resistant ball is designed for indoor use and offers a variety of fitness benefits for multiple muscle groups. With its lightweight design and Italian craftsmanship, this Gymnic ball is a versatile and durable addition to any workout routine.