This was purchased as a gift……for someone who drives for at least 8 hours a day (sometimes more) and after the 1st day of using it he told me that it was great and really made a huge difference as far as comfort and NO agitation on his spine. Also, fits with no problem around the back of the seat….. It’s been almost 3 weeks since my friend started using this Lumbar Support ….. he keeps it in his work van and as I previously stated he drives at least if not more for 8 hours each day of his work week….. Because he is so pleased with the cause and affects of this support it was a must share…. It’s still extremely comfortable has held up to the many hours of use and his back & spine have "never" felt better..If I could change my 5 star rating I would make it a 20**** rating….. Please have absolutely NO doubts about purchasing this item. The real upside to this is you can’t beat the cost…. ..More