Wow! This thing is amazing! I stared at the unopened box for 2 days before I decided , I’ll just DO it. The intimitation that I felt eased as I unpacked the components (all pieces were there) all in perfect condition.. The brief instructions were challenging at first, but, alas, the pieces all fit and I was surprised at how easy it went together. Great design, wheels are sturdy, and adjustable handle bar. NOW, to get the cats into it. . . ah ha