Who knew there was such a thing as "folding" box springs! When I began my search for a new mattress and box spring, a Wayfair representative took the time to talk me through what would best suit my needs.  I must say I am impressed.  I removed them from the box, unfolded them, and zipped the cover on. Done.  Having two pieces...oh wait...I didn't mention that it was not just one box spring, but TWO!  Having two pieces is more manageable if you don't have an extra pair of hands around.  I am confident these will last a long time.