EPIC!  This is made VERY well. The third pic is the box. It was shipped UPS. It was 66lbs.  I wanted to share the close up shots.  It actually has a nub for one slate to fit into (middle pic). The rest of slates you nestle with the velcro and it makes a secure fit.  You want icing?  In the picture to the left is a white strip. Take that off and it's sticky to secure the mattress.  Boom mic drop. Enough said.☺️