Ten foam pieces come out of one box: 2 arches at 20 by 10 by 22 inches, 2 cuboids, 2 flat cushions measuring 30 by 20 by 2 inches, 2 semi-cylinders, a 20-inch slide and a matching stair. Little hands can drag each block into a new layout because the whole set weighs only 15 lbs. Every piece is high-density foam wrapped in PU leather, so a spill wipes off with a cloth instead of soaking in. Hook and loop fasteners hold neighboring blocks together on the floor, and hidden zippers keep covers closed during play. Edges are rounded with no exposed corners. Suitable from 1 year and up, the set gives crawlers a low ramp to conquer and older toddlers a stair and slide combination they can rearrange themselves.