Wagon/Stroller combo?

We’ll be doing a fair bit of traveling and hiking / walking this summer. We’re looking for a good wagon/stroller that works well off pavement.

Our kids will be 4 and 2. Older one does well most of the time, but he’ll get tired and want to ride sometimes. Younger one is a klutz and still hasn’t mastered walking at 19 mo. She’s also in the “let me just run in this direction and ignore you” phase and has minimal verbal language, so we expect her to be in it a fair bit.

Recommendations??