Ahead"s Spinal G drum thrones have been developed for players who require the higher level of support and comfort an ergokinetic throne provides. Ergokinetics is a term invented and trademarked by Doctor of Chiropractic and designer of the Spinal G throne, Richard Robertshaw. This science focuses on the integration of design and support of the human body in motion, whereas ergonomics studies the integration of design to support the human body at rest.Black velour seat top Black sparkle wrap Thick memory foam cushions Split-seat, spring-balanced throne Double-locking, threaded height adjustment Sturdy seat connector plate Heavy-duty tripod base