PACKAGE CONTENTS - Packaging include 2 PCS Nillkin portable laptop stand Black. FOLDING DESIGN - it has an invisible effect after folding, which will not take up your space, Suitable for carrying and business travel. STABLE & GOOD HEAT DISSIPATION - laptop stand is made of high quality lightweight zinc alloy, triangular support. Non-slip silicone on the bottom and stand surface, more stable, Good heat dissipation function. ERGONOMIC DESIGN- 3°,11° and 16° three different angles to adjust, Suitable to different heights of people.Protect your neck and shoulders from pain, Reduce strain on your wrists and arms, improve typing accuracy and comfort. LAPTOP STAND & KEYBOARD RISE - Design for Laptop and Keyboard, Compatibility with MacBook Pro/Air 13 16, 10-17 inches Surface, Lenovo, Dell, HP, ASUS laptop and most of keyboard.