Easy enough for one person to put together, they came with all the hardware for both chairs. No bolts were too short. Instructions were a little tricky, just had to read thru a couple times. The two toughest parts for me were (1) putting the brace on the back of the legs. I needed make the pre drilled holes in the brace a little larger to be able to get the bolt started. And (2) lining up the removable pin in that allows the chairs to be folded, I needed to get a rubber mallet to pound these in. Not sure how useful that feature will be for me,  I live in Florida and plan to leave the chairs out year round. 
I wanted an orange and a lime, but I debated too long and the lime sold out.  I bought two orange ones, very cheerful on the gloomy day I took the pics. They seem sturdy, I think as long as the hardware doesn’t rust, they’ll hold up to Florida weather.