B.B.
We have the Radio Flyer Pathfinder and LOVE it. I have a 2 1/2 year old and a 4 year old. They love to go for walks in it. We have taken it to Sea World, the zoo, and parades. It can be bulky, but it keeps the kids happy, which keeps me sane. :)
ETA: Mine does have straps so you can strap them in. It also has cup holders, which both kiddos find pretty cool.