R.K.
We have a maclaren they go up to 55 lbs and my extremely tall 7 yr old fits in it he's used it comfortabley a few times when we were out very late its much easier to carry around our little guy than it is a tired 7 yr old. but if you are considering a stroller because of the asthma you really shouldn't. My oldest has severe asthma and limiting physical activity is one of the worst things that you can do. Have you tried singulair and pulmicort my son takes both of these daily do not have put on flovent the side effects are terrible in children same thing with symbicort.