This is a set of a backrest and seat (^o^) It hasn't been used much, so it's in good condition, but it is a used item and not perfect, so please understand (_ _) This is a pelvic correction cushion with a backrest, featuring a hole in the center to support posture. - Brand: Meikaso - Color: Black - Design: Pelvic correction cushion - Features: With backrest - Purpose: Posture correction - Shape: Hole in the center Thank you for looking.