Box spring. Total height is about 18". When EnviroBaby started rolling over, we put a yoga mat on the floor next to the bed and a line of pillows along the edge of the bed. Usually, when he rolled up against the pillows, he'd roll back the other way. If he did manage to roll over the pillows, his fall was cushioned by the mat. He fell only 3 or 4 times. By 10 months (30" tall) he could climb onto and off of the bed.
Mama to a boy EnviroKid
10 years old and a little girl EnviroBaby
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