German 
German seat specialist, Grammer Inc., introduced the compact MSG75G/522 and the MSG65/521 to ensure relaxed sitting for hours with greatly reduced risk of vibration- or posture-related injury. The air-suspended MSG75G/522 has a seat index point (SIP) of 9.4 inches and a suspension stroke of 4.3 inches. The backrest can be set to any angle from –5 to +30 degrees. The alternative MSG65/521 is available with mechanical suspension and quick weight adjustment. At 7.9 inches, this model offers the lowest SIP of any seat with a full suspension. The MSG65/521 also provides effective support when driving backward, as the asymmetrical backrest is tapered on the right to make it easier for the driver to twist around in the seat.