Pram Strollers: These strollers are normally only used for newborns. There design can support children up to 4 months of age. They are typically lay down models with special chassis to support infants comfortably. The have four wheels for stability and are not rugged. These stroller are not meant for any off path terrains and will perform comfortably on high traffic walkways. Since these strollers are only meant for children up to a few months, they are perfect for parents looking to have more than one child or even hand me downs once a child has outgrown it.