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