Features: This-Laptop-Riser-Is-Designed-For-Comfort,-Ventilation,-And-Portability. --6-Adjustable-Tilt-Levels-For-Comfortable-Neck-And-Spine-Positioning --Foldable-And-Easy-To-Store --Made-With-Lightweight-And-Durable-Aluminum-Alloy-For-Ventilation-And-Heat-Dissipation --Triangular-Support-Structure-For-Stability --Anti-Skid-Pads-And-Protective-Hooks-Prevent-Device-From-Sliding-Off --Compatible-With-Laptops,-Tablets,-And-Smartphones --No-Assembly-Or-Tools-Required-For-Setup. - Warranty:-1-Year.