I put the 3 year old at the top with her back against the hood, with the hood down so she had something extra th lean on and then she put her legs to one side - I took her shoes off! and then put the baby in what was left. My oldest thought it was great. They are really quite roomy. And she is a big girl. Then whne the baby could sit up I put a harness in and she sat at the hood end and the other one sat at the bottom. Sometimes she put her legs over the end. They are 4.5 and 21 months now and they were both in there today on the way home from the park. I have got a buggy and a buggy board but this seems to work better.