Love this set.  Once you assemble one piece the others go pretty quickly. Please see other reviews on tips for assembly.  We had no problem with the locking mechanism on either of the storage units.  The storage units are KEY! The taller one fits all the seat cushions and the lower one fits all the cushion backs. It really makes it so easy.  Overall the price to quality ratio was excellent.  Highly recommend this set.  Lots of options for all the different pieces.  Wayfair delivery was amazing - the guys were so accommodating on where to take and place the box.  Made sure it was all intact and didn't have any dents or tears.  Great customer service.