The roo is similar in function to the joey chair but bigger. A wider and higher seating surface that has an even higher backrest for all the comfort you could ever need. Lightweight and compact, Easy set up, no parts to lose, Wider, taller, higher Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov (http://www.p65warnings.ca.gov/). This warning is on product being shipped to customers in California.