This is the Angeles Bye-Bye Buggy: a commercial, 6-seat stroller with never flat fat tires that lets you move a bunch of kids around with less effect. It is designed to work on gravel and grass. It has 360-degree pivoting front wheels.
This stroller has safety buckles. Each seat can accommodate children up to 40lbs each. This 6-seat stroller can fit through doorways. Canopies are available as an option.