Thank you for your interest in Drs. Foster and Smith. The measurements for the beds are listed below (length x width x height). Each bolster is about 6” wide, so it will reduce the sleeping area slightly, but the bolster are sewn to the outside seem on the top edge and lay on top of the bed. If pushed out the sleeping space is not changed too much.
Small: 20x30x7, outside- 14x18x7 (with the bolsters laying flat)
Large: 30x40x7, outside- 30x40x7 (with the bolsters laying flat)
X Large: 36x54x7, outside- 30x42x7 (with bolsters laying flat)
If you have any further questions please contact us at 1-800-381-7179.