I did not have car seats with a stroller that they would snap into. I ended up buying a double stroller that the seats would lay down flat. I then was able to put two of the car seats in the stroller. The third one my husband would put in the shopping cart. I really liked this alot better then having all three together. Alot of people said, "oh look twins" and they would keep going but if we had all three together in the big triplet stropller they would stop us.