M.D.
J.,
We have the InStep carrier from Target. We love it! It attached and detaches very easily. It is made for two kids to sit in it up to 100 pounds. We use it for our two sons 4 and 20 months. Our four year old likes to ride his own bike so for short rides he does that but for long ones he sits in the carrier. I just saw it in Targets ad yesterday and it was $90. We got ours four years ago and paide $75.
M.