the Greco Pack n Play Porta Crib is a smaller version of what we called a play pen in the old days. it sits up a little higher than a play pen. And it easily assembles and dis assembles to pack in the bag to take with you. My daughter was bringing hers to our house whenever her children spent the night. We just put our 6 month old grandson in it. And not only is it a good place to sleep. it gives him room to roll over and play. We now have our own Greco Pack n play so my daughter does not have to bring hers each time. it does not take up a lot of room. And we can go about our normal routine without worrying that our grandson will be hurt.