1. Foldable design. Portable and easy to store. 2. Support 6-level height adjustment.5.5-15.5cm adjustable. 3. Adopt Aluminum Alloy material. Integrated anodized sandblasted alloy aluminum structure. 4. Adopt non-slip silicone pad. The protection bracket is not slippery, not slippery, not falling. 5. Floating heat dissipation structure. The back is completely suspended and unobstructed, which is more conducive to computer ventilation. 6. Stable triangular support. The holder is stronger and stable. 7. 3D surface anti-scratch protection. Safe, comfortable and will not hurt your hand. 8. Support for laptops up to 15.6in.