Which double strollers have the best adjustable seating options?

A full-size modular double stroller that converts from single to double with a slide-and-lock frame, accepts one or two infant car seats, and offers reversible toddler seats that transition to lay-flat carriage mode; large EVA wheels, rear suspension, and a very large storage basket. It suits growing families needing a flexible, convertible inline double stroller.

The Bugaboo Donkey 6 is a modular single-to-double side-by-side stroller with large all-terrain wheels, one-hand reclining seats, and expanded storage (50% larger underseat basket). It converts from mono to duo in three clicks and supports newborn bassinets, toddler seats, and many infant car seats, making it versatile for growing families. The design keeps children at the same height and fits through standard doorways in double mode.

The BabyCruiser Double Stroller is a side-by-side stroller with independently reclining seats, including near-flat recline suitable from birth. It folds with one hand, fits standard doorways, and suits families with twins or siblings up to approximately age three.

This tandem double stroller supports two children up to 40 lb each and can accommodate two infant car seats. It includes a sit-and-stand configuration, five-point harnesses, canopies, a one-hand fold, a large storage basket, and a parent console, making it suited to families with children at different ages.