If you’ve already upgraded your stroller to a BOB Revolution Duallie, you can take advantage of the BOB Duallie car seat adapter that offers tremendous benefits to both of your kids.  The Duallie adapter spans across the entire stroller.  A car seat attaches to one side for your infant, and a convenient snack tray pops on to the other side for your toddler.  So no matter the age of your stroller passengers, they can benefit from the versatility of the adapter.  When your youngest outgrows the infant car seat, the Duallie adapter comes with an additional snack tray that can be snapped onto the other side as well.  With the initial car seat carrying function, plus the convenience of having the snack trays for later, the Duallie adapter has tremendous value and is an investment for the life of your BOB Duallie stroller.