Colour Grey Form factor Cover Compatible devices Tablets, Telephones, Keyboard, Laptops Compatible phone models Macbook/Surface/Samsung/HP/Dell/Chrome Book, Tablet and Phones(up to 17.3 inch) Optimize Desktop Space - The vertical laptop stand cradles your laptop or notebook vertically and keeps your desktop well-organized and space-efficient Adjustable Size - The laptop holder has adjustable width, enables compatibility with most laptop or notebook brands with thickness ranging between 0.55in x 14mm to 2.71in x 69mm Protective Mat - The laptop stand adopts non-slip silicone mats cover the laptop docks to keep your notebooks from scratches and to keep devices stable Durable and Stable - Its anodized aluminum alloy is scratch resistant, and its wide base guarantees stability and prevents falls Exquisite Workmanship - Its sandblasted, brushed, and CNC-machined from anodized aluminum alloy