Features : Compatible with laptop 11 12 13 14 15 15.6 17 inch. ( It is a compatible size, it does not mean that the laptop cooler panel and the laptop size are the same size.) Size : 350* 255*26mm;( Please understand that there is an error in manually measuring the size.). Material : Aluminum alloy+ ABS Product Description: It is made of ABS material with triangle solid structure, which has high hardne and is not easy to break. Aluminum alloy panel brings better thermal conductivity and heat absorption. Cooling pad has strong heat diipation as it adopts enlarged mesh design. And it can give a quiet space and strong wind as it uses low-noise turbo motor. Laptop cooler has seven gear height adjustment, which allows you to adjust to a more comfortable viewing angle. As it has Knob wind adjustment, it allows you to adjust according to the temperature of the equipment. Ruian Friend Pay Attention Please !!! - Please fill in receiver's full name due to new policy of Ruian customs, thank you ! Adjust the Seven gears of high and low, adjust the appropriate angle according to your needs, and take care of your cervical spine health. Adopt dual USB power supply mode.