Developed for players who require the higher level of support and comfort that an Ergokinectic throne provides. With it's addtional back support it becomes the ultimate drummers throne. Designed to eliminate tail-bone compression and support the way your body moves by improving flexibility and fighting fatigue, hip, back and shoulder pain. Features: - 18 black saddle velour seat top with back support - Black sides Removable back support with self adjusting pivot - Thick memory foam cushion - Split-seat, spring-balanced throne - 3 leg base - Double-locking, threaded height adjustment - Durable seat connector plate - Allows the pelvis to move reciprocally in three dimensions - Allows the tailbone (coccyx) to hang naturally versus being compressed against the seat - Supports a more natural movement of the spine and shoulders while seated Technical specifications: SKU: SPG-BBR Seat length: 45.72cm (18.00 inches) Seat width: 38.10cm (15.00 inches) Seat thickness: 11.43cm (4.50 inches) Weight: 7.2kg (15.90 lbs) Height range: 45.72cm to 60.96cm (18 to 24) Weight Limit: 122kg (270 lbs)