This toy robot can also navigate his surroundings using self - balancing dual wheels. (geekwrapped.com)
The stroller also comes in with a number of ideal features such as dual wheel system on the front, lightweight stroller frame with plastic capping, a padded bench seat for the second kid and a stand on platform, and one hand fold system with a storage latch.In addition to these the reclined stroller seat comes with multi-positions including a flat option and also a 5 point safety harness. (ultimatestrollerguide.com)
Also, strollers with dual wheels on their fronts can more easily be knocked off kilter if one wheel snags on something. (wetheparents.org)