1. Material: metal 2. Can be used as a keyboard booster, making typing more comfortable 3. As a laptop booster, it can dissipate heat in the air, making the computer run more smoothly 4. Without blocking the air outlet, efficient heat dissipation 5. Thin and invisible, only 5 mm thick 6. Strong glue on the back, stable and not easy to fall off 7. All metal design, wear-resistant 8. Foldable design, compact body without taking up space after folding 9. Size: about 4x5 cm 10. Weight: about 22 grams