product description 1.Home/Gym/Office Barbell Exercise EquipmentMade of PVC material. Soft, low odor and durable. Small exercise balls are designed to remain elastic and soft during full inflation or complex poses. 2. The mini therapy ball is a magic ball. Not only enhances your posture, body stability, balance, flexibility. Balance balls also improve endurance and core strength, tone and shape muscles, and relieve neck and back pain. Suitable for all kinds of weight training, core training, training exercise programs, postoperative rehabilitation training, etc. 3.Fitness program for men and womenFitness ball is suitable for yoga, pilates, ball, physiotherapy or home/office exercise. For women, long-term use of the fitness ball can perfectly shape the curve, and for the elderly, it can effectively exercise the back spine and strengthen the cardiopulmonary function. 4.Easy to Inflate and CarryEasy and fast to fill the soft ball with air. Core Balls are easy to carry and store at home, in the gym, or on the go. Reminder: For better reuse, we recommend that you only need to fill it with 70% to 80% air.