We bought this for our grandchild's yard and think it will be wonderful and very sturdy. We bought it cheaper than Amazon as a WalMart special for Xmas 2012 with free pickup at the store. FYI, the box is heavy so you would need help to get it into and out of your car, but the box dimensions are 40 inches long x 24 inches wide x 7 inches deep, so the box should fit in any backseat. When completed, one person can stand inside and move the dome several yards for mowing, etc.
The first problem with the instruction book is that our pale metallic brown and dark green rods (Earthtones) were diagrammed as dark and light respectively, which was confusing.
Second, the initial step is to make 5 separate units, but the book said to make one Unit and then "repeat 5 times". The book also labeled one crucial joint with the wrong code.
Third, about tools. The instructions say that assembly requires a hex (Allen) wrench and a socket wrench with a 1/2" socket. That is wrong. In the early stages of the assembly, a standard socket is not deep enough to tighten the first nut that you put on the long bolts. That first nut does not require a socket wrench and can be tightened using a regular wrench. So for the first nut you need either a deep socket or a standard wrench. However, when you put the handles on the ends of the bolts at the last step of the assembly, you do need a socket wrench. For that, a regular socket is sufficient, but of course a deep socket can handle it, too. So what you need for assembly are the following:
(1) a hex (Allen) wrench
(2) either
(A) a deep 1/2" socket wrench
or
(B) both of the following
(i) a regular 1/2" socket wrench
and
(ii) any one of the following:
(a) a 1/2" box wrench
(b) a 1/2" open-end wrench
(c) an adjustable (Crescent) wrench
Only one person was needed initially to open the box, take inventory (which included one extra knob and one extra set of bolt, washers, and nut), lay out the 5 initial units and assemble them, about a half hour. Thereafter a second person was vital to hold the units up in place for assembly around the dome. We had 3 adults, with the third person giving out the needed parts and reminding the assembler of the order to place the rods on the bolts.
We had a large level area for assembly, and took almost 3 hours from starting to open the carton to gathering the waste at the end.
We followed the advice of another reviewer not to tighten any joints by tool until the assembly was on the last steps, since inevitably some joints have to be corrected, and a number of the joints have to be unscrewed for more rods to be added as the assembly progresses.
The metal rods will not be a problem in summer heat, the reviewers said, but the rods felt cold at freezing temperatures.
We are very pleased (5 stars) with the product overall and anticipate a lot of interest. The family already has a parachute that will be fun to put over it. But the assembly problems took off one star in expectations. Since you are now forewarned, I urge you to get this product!