The furniture is a bit lightweight for the cost, but I don’t think it is light enough to blow away. Some of the holes for dowels weren’t quite drilled out enough but with a wood shop and plenty of tools on hand that wasn’t a big deal. I really like the cushions and that they have loops with Velcro to connect them to the wood frames, so the cushions can’t blow away. 
The boxes were pretty beaten up when they arrived, there were some holes in them but thankfully we didn’t lose any hardware. 
Overall happy with the set for the cost.