Two 7cm fan, convenient use. Direct use USB power supply or can match 5V power converter Beaaring : sleeve Bearing

 Acrylic panet, two 70*70*15MM ventilator,Several kinds of design

Using black plastic bag around the edges in order to prevent scratch computer.Classical fashion, fine workmanship.There, and switch control work indicator.two 7cm fan, convenient use.Direct use USB power supply or can match 5V power converter.

 Telescopic and Easy to carry

applicable:14--15.5' laptop

Notebook cooling padHF--789