System-S Car Auto Air Vent Drink Cup Holder - System-S Car Auto Air Vent Drink Cup Holder - Easily attach to the air-condition vent of your car. Keeps the drink warm or cool with air conditioner airflow. - Secure attachment with the two clips. - Size(approx.): L 4" x W 3 1/4" H 6/8" (10.2cm x 7.9cm x 2cm). Holds drinks up to 2 3/4 inch in diameter - Shipment: 2in1 car air vent mount