3 in 1 Car Cup Holder Extender: The car cup holder has a total of 2 available car cup holders and a car cup holder tray, the top car cup holder tray measures 9.2 x 6.5 inches, and the two additional car cup holders are both 2.75 inches in diameter. You can choose which car cup holder to use according to your needs. Please make sure to measure your bottles/cups to ensure fit.