This is the best portable crib....standard in size and very easy to move around from room to room.  It folds up without having to come apart so it goes through doorways really easily.  Just tip the mattress up or take it out, and pull up the mattress board, and accordion the bed together.  Easy-peasy!   Also makes putting away in a closet (grandparent here!) when not in use a real plus!!!  It folds together to be about 8"-10".