the present disclosure relates to a stroller with a secondary attachment mechanism to facilitate the attachment of various structures to the stroller . in one embodiment , the secondary attachment mechanism may comprise an infant car seat adapter . in another embodiment , the secondary attachment may comprise a basket . the present disclosure also relates to a basket for use in an expandable stroller system . the expandable stroller system comprises an expandable base . the basket attaches to the expandable stroller system and expands with the expandable base of the stroller system advantageously providing additional storage space .