Following three years of exhaustive research and development, Pearl’s professional Roadster thrones have been updated to give drummers the right support where it is needed most.The difference lies in each Multi-Core throne top. Using multiple layers of varied density foam that wrap around the surface of the cushion, Multi-Core’s ergonomic design and computer-tempered surface provides support to ease joint pressure during long sessions.Models include the D3500 Multi-Core saddle-style throne (available solo or with a fully adjustable backrest,) round cushion Multi-Core models with shaping peaks to ease pressure, and the revolutionary D1500TGL Trilateral Gas Lift throne, which delivers the feel of both round and saddle cushions depending on how they are mounted by the drummer.Essential for extended and efficient performance, Pearl Roadster thrones feature advanced ergonomic design and a selection of computer-tempered cushion tops to provide support and ease joint pressure during long sessions. The D1500SP features a donut shaped Multi-Core Foam cushion, with multiple layers of varied density foam for better playing and improved feel. Its durable tripod includes Pearl’s adjustable Shock Absorber post for outstanding support and balance, and out exclusive Lock/Spin System allows the cushion to be secured in place or free spinning depending on preference.Specifications: