I have made a lot of purchases from wayfair and this is the first disappointment.  Firstly, I ordered the 15 " size and I'm not sure how the measured,  but it is barely 13" in diameter.  It is styrofoam and very very light.  Would probably be OK for indoor decoration, but I don't think it will hold up on my covered porch (which is what I bought it for).
Nice idea for decor, but needs to be better quality.