It accommodates only one infant car seat at a time, however ... manuals caution that older kids should hold on to the stroller frame with two hands when standing; this was easy for Erica ...

Travel systems and car seat strollers are also distinct from car seat carrier strollers, which are simply frames on wheels that a compatible car seat can clip into to function as a stroller.

Ultimately, “the best car seat for any child and family is ... and most can be attached to a stroller or a stroller frame (though you may need a special adapter). For this reason, considering ...

Instead, strip the car seat to its shell ... the engineer who oversees CR’s stroller tests “Finally, examine the entire frame for dents or cracks, or missing bolts or other hardware.” ...