The removable, anti-burst Balance Ball is free of latex and the six most harmful materials. Got this to help with my posture while sitting at the computer all day--love it! Helps tilt your pelvis so your spine stacks over the pelvis instead of all slumpy. I feel more alert when sitting up straight, and can lift my collarbones and move shoulders back and feel even better! I got the ball chair for my home office. I always intended to sit up straight while working, but now i dont have the chair to fall back on (so to speak. ) It really works! "
