I have this one

http://www.canadiantire.ca/en/pdp/tw...age_reviews_li

and I attached a third single place one at the back. I can sometimes sit 2 in the front.

I also have a large black I can fit 3 kids in. It's deep and have high hedges so I sit the small one in the back so the edge help her sit up straight. I don't know where I got that one from however.