The features: 1. 12V integral compressor 2. A symmetrical shape of the backrest provides more elbow room on the right-hand side of the seat and full support on the left hand side. This makes driving backward much more comfortable. 3. Adjustable lumbar support. Great for sensitive lower backs 4. Backrest angle adjustment: +45º (forward) to -30º (recline) 5. Easy adjusting, super smooth, low profile suspension features a 3″ stroke to even out the roughest jolts and shakes. 6. Heavy duty slide rails with 8.25″ range 7. Includes operator presence switch 8. Supports operators up to 375 lbs.