The USB fan is made of plastic. Small and portable, round hole charging, noiseless and mute, durable battery life. The innovative design can evenly cut the airflow to create a comfortable and natural wind. Fashionable and cute shape, 250mAh charging 2 hours can work 0.5-1H.USB fan is great for home, office,outdoor. Especially suitable for summer travel or outdoor sports,you can take it to anywhere,like NBA/Football Game/or any activity.The hot summer is coming. You can send this fan to your family and friends as a gift