MAPEX Drum Throne (T770) The larger size and added cushioning of the 14 wide x 4 thick round seat provides increased comfort while the adjustable back rest provides needed support for the spine. Apex Throne Saddle Top The larger size and added cushioning of the 14 wide x 4 thick round seat provides increased comfort while the adjustable back rest provides needed support for the spine. 14 x 4 Thick Round Top Cushioned Seat Soft Vinyl Covering and Adjustable Back Rest