Emily's seems to inflate more across the back now that the shoulders can lay flat (no need for the shoulders to blow up) so she's getting really good vibration back there. Chest seems the same as before and we have more room to adjust than before (I like the straps for this one better and the shoulders have wider velcro panels so I was able to customize her fit better. However, she also sized up so the black one in the same size may have been similar in having more adjustment capability than the previous smaller size.) The hoses stay attached better than before, move with her- and she can actually sit in a chair with arms now.