Stagg Double-Adjustable Twin Piano BenchStagg’s separately-adjustable twin piano bench is designed with the consideration that the 2 piano players using it could have significant height difference. Therefore by creating a separate height adjusting mechanism for each seat this twin bench ensures both players are comfortable.  This makes it especially suitable for piano teachers and children. Moreover, both the teacher and the pupil can assume correct posture which is essential for developing a proper technique.Specs:  Colour: Black Finish: High gloss Fireproof black velvet top Independently adjustable height: 51 – 60 cm (20 – 23.6″) Seat dimensions: 2 x (47 x 32 cm (18.5 x 12.6″)) Top dimensions: 2 x (44 x 29 cm (17.3 x 11.4″)) Weight: 10.8 kg (23.8 lb)See manufacturer website