Ahead Spinal Glide Drum Throne

Thick memory foam cushion Split seat Double-locking, threaded height adjustment Durable seat connector plate Allows the pelvis to move reciprocally in three dimensions Allows the tailbone (coccyx) to hang naturally versus being compressed against the seat Supports a more natural movement of the spine and shoulders while seatedYou may also like Ahead Spinal-G 3-legged Drum Throne with Back Rest | Black.