The TORRAS COOLiFY Air wearable fan offers refreshing relief, right where you need it. It uses the advanced Ku 2.0 Peltier radiator to deliver instant cooling. The built-in ceramic semiconductor radiator targets the blood vessels and nerves at the back of your neck to rejuvenate your whole body. It's a smart, portable option for staying cool anywhere. | Torras COOLiFY Air 5000mAh Wearable Neck Cooling Fan - Midnight Black