【Upgraded Powerful Fan & Improved Comfort】 In summer, cool air similar to the temperature of an air conditioner's vents is sent throughout the seat, and in winter, the built-in heater evenly heats the back and seat, providing warmth and comfort even in cold seasons. The upgraded, powerful external fan is installed under the seat, away from the ears for quiet operation, and designed to be pressure-free and highly durable. 【Excellent Breathability & Two USB Charging Ports】 The surface is made of cotton and linen fabric, and the interior uses mesh material, providing a comfortable fit and excellent seating comfort. It is highly breathable, releasing heat in summer and retaining warmth in winter. In addition, the cigarette lighter includes two USB charging ports, allowing you to charge smartphones and tablets simultaneously. 【3-Level Airflow & 3-Level Heating Adjustment】 Bringing the external large fan's air intake closer to the air conditioner's exhaust vent further enhances the cooling effect. 3-level airflow in summer and 3-level heating adjustment in winter are available, easily switchable with button operation. It supports comfortable driving throughout the year, according to your preference.