The heat dissipation suckers is made of high-quality PVC material. With the simple structure, it is convenient to carry and use. The suction cup design can absorb the desktop, making it more stable. It can effectively reduce the overall temperature by creating a cooling gap under the laptop. It is easy to install and remove. Item Name: Heat Dissipation Suckers Material: PVC Features: Heat Dissipation, Easy to Install, Easy to Carry Size Details: S: 3.5cm x 1.4cm/1.38" x 0.55" (Approx.) L: 4.5cm x 2.2cm/1.77" x 0.87" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x Small Heat Dissipation Suckers 2 x Large Heat Dissipation Suckers