product description1. Mini fitness ball. Pilates balls are made of eco-friendly PVC. It is non-toxic, flexible, durable and safe.2.FIT FOR EXERCISESStability balls are designed for yoga, pilates, barre, physiotherapy or home workouts focused on strengthening core, posture, stability, balance, toning muscles and back rehabilitation.3. The therapy ball improves people's flexibility, strength, balance, posture, cardiopulmonary function. For women, long-term use can effectively make your body shape and shape the perfect curve. For older people, exercise the spine is very effective. The mini yoga ball is a very practical ball, small and portable, which can be carried anywhere in the gym/travel/training.4. Exercise ball Each product will be equipped with an inflatable tube, you can use it to fill the yoga ball with air easily. Note that for better recycling, we recommend that you only fill it with 70% to 80% air.