The 3 in 1 Ball The Complete Collection is a versatile fitness ball made of plastic, suitable for full-body workouts at home. With a maximum weight capacity of 300 lb and a convenient pump included, this exercise ball by Hinkler Books offers a variety of fitness activities for gym training. The blue ball measures 16 inches in width and weighs 5 lbs, making it a practical and effective tool for achieving your fitness goals. Made in China, this exercise ball is a must-have for anyone looking to enhance their workout routine.