Designed to make meditation camps & satsang more comfortable. Promotes good posture and provides back support. Reduces stress of having to sit in one single position during meditation. Extra detachable rectangular back support gives further support to the lower back.Dimensions in inches: 18x20x21(LxWxH).Fully Foldable chair with 7.5 cm thick, 40 D foam.Fits everyone under 5 feet 11 inches.