Foldable & Space-Saving: Compatible With All 15.6-Inch To 10-Inch Notebooks. 4Mm Thick, Convenient For Storage When It Folds Up.Ergonomic Design: Excellent Laptop Riser To Fit Your Eye Level As Well As The Angle For Reading And Typing, Helpful To Relieve Pains In The Shoulder And Waist.Thoughtful Design & Material: Made With Aluminium-Alloy With A Hollow Design, It Creates Air Ventilation Which Is Helpful On Heat Dissipation But Keeps Strongness, Plus The Advantage Of Light-Weight (300G).Stable & Solid: Triangular Structure Makes It Reliable. Rubber Anti-Skid Pads And Protective Hooks Protect Your Laptop From Scratching And Sliding.