Can I put Endy back in the box? Haily 09 July 2018 14:00 Updated Once Endy is out of the box and unwrapped, it will not fit back inside. Related articles When can I sleep on my new Endy Mattress? Will you bring the package into my home/apartment? What do I need to know while I wait for my order? How did Endy grow so quickly? What type of bed frame should I use with the Endy Mattress?