Laptop Stand with 6 Adjustable Angle Design Foldable Ergonomic Desk Stand Holder for Notebook, iPad, Macbook Black (z5) High-quality plastic material: 4 mm height solid and durable. Ventilated Design: Hollow bottom laptop stand keeps your laptop elevated for optimal natural airflow, ensuring your notebook stays cool and performs at high speeds. Foldable and Adjustable: Can be folded into a book, easy to carry. 1-6 levels of 3 inch to 5.7 inch height (Angles adjustable 15 and 35 degrees), customizable for the most comfortable view. Stable Design: Non-slip silicone pads, typical quick installation of silicone stoppers, safe and easy to use. Wide Applications: Compatible with all types of laptops, tablets, MacBook from 9 inch to 15 inch with better cooling system. It can also serve as a book stand.