This is the latest version of the DOCTOR AIR Stretch Roll 3, model ESR-07. When I was suffering from a hip injury that wouldn't heal, the gym I go to had an older version of this, and I tried it out. I was so impressed that I bought a new one for home use. I purchased it new in March 2025, but since my injury was already on the mend, I didn't end up using it much. Therefore, it's in near-new, excellent condition. The vibration is amazing, and just by sitting or lying on it, you can feel your muscles loosen up considerably. I considered continuing to use it, but I decided to sell it because I was worried about the vibration noise bothering the neighbors in my apartment. Please feel free to ask any questions. I will be away, so shipping will be after May 31st. Features: A wide variety of vibration patterns that can stimulate the whole body in a balanced way. You can expect to relax your muscles just by applying the vibration to areas of concern on your body, without having to move yourself.