Its basically a door frame bouncer put in an activity centre thing. Instead of the baby sitting in the thingy they bounce in it. Joshua hated his door bouncer, and its really important to only use them when their legs are strong enough. My friend is talking about putting her son in one soon (he only 7 weeks!!) she claims he is strong enough, yes he a strong lad but no way will his legs be ready! I wont be getting a door bouncer, and I did look into a jumperoo but its too big for my house, and I wasnt sure george would get the use out of it for the amount it costs.