Creat.J Acoustic Guitar SupportFoot restAngle height adjustable the best position It's a vital item for learning acoustic guitar. It's easy to take on and off with the suction cups. You don't need to put your leg on anything when you play, so you can keep good posture even when you play for long periods of time. For women wearing dresses/skirts, it is nicer to play with because they don't have to lift their leg up. size: 23.5cm X 6.4cm X 12cm (about 9.25" X 2.52" X 4.72") weight: about 190g (6.70 oz)