You can take your twins with you to the shopping mall in one stroller, the Baby Jogger City Select Stroller with Second Seat Kit in Ruby. (babystrollersellect.com)
An inclusive second seat kit that allows you to convert the stroller into a double whenever you want, its awesome compatibility that gives users the chance to use it with over 16 brands of bassinets and a large storage basket that offers a quick carries for baby — parent accessories and groceries. (ultimatestrollerguide.com)
You will want to check Amazon for a deal where you can buy both the stroller and second seat kit together for a good price. (stroller-envy.com)