The City Select Bassinet Conversion Kit contains plush padding, apron and support brackets that will convert a City Select single seat into a bassinet in a few simple steps. Simply remove the fabric seat from the seat frame and snap the bassinet fabric on in its place. A complete single seat is needed to complete bassinet conversion. To use bassinet in double capacity mode, the second seat for the stroller must be purchased in advance. Maximum weight capacity 25 pounds.