Pro: good desgin, robustCon: worst manual and package.I purchased this Bell Cocoon from Walmart. It actually took me a while to figure out the manual, then 2.5 hr to install everything. My plan is to install it on my wife's 24" mountain bike, however, it does not fix, so I installed it on my 26" mountain bike instead (I purchased a Copilot for that 24" bike.)Overall, I do like Bell's design, it is robust since it provide several points to secured to the bike, and once it is secured, it just don't move. For my other Copilot seat, there are only 4 points to secured with bike, plus one belt to fasten to seat pole. It seems not a good design to me. However, Copilot does provide me an advantage that I can remove car seat easily which Bell does not.I suggest Bell can write its manual more friendly. Or, at least, assembly the rack in factory, then customers just secure it to bike. That is why I just give it 4start, not 5.