Defining the best tandem stroller can be hard, but some general features are naturally more common and useful than others. For example, it is highly recommended to focus on safety before anything else. The baby should never be left unattended inside a stroller, especially while sleeping. Some babies can slide down through leg openings. Never overlook the safety harnesses and belts either. Feeling like overloading the stroller? Think twice! Plus, how about locking the wheels? This feature is great when you pop into someone or you need to wait for someone. Unexpected accidents can only be prevented with care and attention.