my six month old daughter have be use this activity center for several month and absolutely love it . she will play in it for long period of time since she can easliy swivel the seat to get to a new toy , and she really love the bright color and sound . we use it with the stabilizer foot in place and it never seem too unstable for she , even when she be bounce as much as she can . it be easy to assemble and the part come apart easily if need for cleaning . after research and read many review , I be glad I decide to order this activity center and be sure my daughter will continue to enjoy it for month to come .