This product is made of thermo plastic elastomer, it can be used to keep you feel cool.The USB mini fan is of detachable design, and it is lightweight and pocket-size, easy to carry and use, especially while traveling anywhere at any time. It can be used on any mobile digital devices, just like power bank, laptop, notebook, car charger and other devices with USB port. Super strong wind with low power consumption and low noise provides you with a happy life.There is a variety of colors to choose from. Great choice for promotion.