1.【Home/Gym/Office Barbell Exercise Equipment】Made of PVC material. Soft, low odor and durable. The small fitness ball is designed to remain elastic and soft when fully inflated or in 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 women for some ages】Fitness 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 Carry】Easy 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. 5.Durable and Non-Toxic-so whether you are stretching your back, squeezing your thighs, or engaging your core, our supplies will last!