Today only, March 2nd, you can shop Diono car seats at up to 45% off! This selection features the RXT Convertible and All-in-One Car Seats for just $184.79. (regularly $359.99) Diono is one of the highest rated brands in safety for children’s car seats. Remember, that Zulily has a flat rate shipping fee of $6.99. Pay that on your first order and then enjoy free shipping on all other orders throughout the day.