Ollieroo&reg; Stability Ball with Pump Anti-burst Exercise Ball Fits all ages and people of different health, a variety of training methods you can choose, easy, fun and stylish Long-term use can effectively adjust your posture, make your curves perfect A yoga ball will help you build strength, tone your muscles, greatly increase your flexibility, and also improve your balance;Great for your spine and back health Perfect for Pilates, yoga, balance and core training, weight training, flexibility and resistance Wonderful tool for adding focus and energy to your workouts