HUGE, but sturdy. Has a flooring that baby can slide around. Short enough to step over and into when needed. The material is easy to clean. I love that I can lay down and play in there with my girl. Very impressed with quality and ease of putting it together. We had a 'portable' one about 1/4 of this size that we quickly outgrew. This one is massive in comparison but the alternative was a mat or quilt on the floor. Love this playpen though.