All sizes are approximate and being measured while the beanbags were unoccupied (meaning, it will become wider both in diameter and circumference when someone was sitting on it).
Height of the beanbags were measured with the narrow top of it being placed flat as in the picture.
(While we are doing our best to describe the size in this website, customers who have tried all sizes of beanbags that Lullabean has to offer will agree that they are different if being compared to each other).