Designed for use with the phil & teds Classic Single Stroller, the “doubles kit” attaches to the back to convert the stroller from a single to a double. No need to buy a whole new double stroller, click in the kit and you are ready to grow – and go! Use the double kit for your toddler up front when you have a newborn, or for your younger child behind with the older child in the main seat. Color: Red Shipping Note: This item ships via UPS Ground within contiguous United States only. Cannot be shipped to AK/HI, PO boxes, US territories, or APO/FPO addresses.