I'm close to the end of a second summer with 4 of these planters sitting out in full sun every day and they still look brand new.  I treated them with teak oil (as suggested by manufacturer) prior to putting them out this spring.  They were very easy to assemble and light enough that I can carry them down to the basement for winter storage.   They don't actually hold dirt, but I put an upside-down bucket hiding in the planter, with the plant pot sitting on top.  Perfect!