Very solid, large support tubes. Also the 4 welded diagonal supports on the bottom are substantial.  In the first month I have disassembled/reassembled and moved it three times. By the third time it was a breeze.  I like that it shortens the amount of space required to setup the hammock.   A couple of small scuffs discovered on delivery, but if needed they would be easy to spray paint with black gloss.  Would recommend.