Material:Aluminium,abs Size：18inch Features WIDE COMPATIBILITY:Universally suitable for laptop models and sizes from 10 to 17.3 inches, it is also suitable for tablets, Kindle, books from 6 inches to 12.9 inches. Portable and foldable:Creative foldable design and high quality lightweight aluminum material with a free carrying case for easy storage and portability, the laptop stand folds up to 25.5*4.5 inches (about 28*7*3 cm). Adjustable and stable:This laptop stand has 7 adjustable heights to lift your laptop from 2.3 inches to 5.7 inches. This laptop stand offers 7 angle adjustments so there is always an angle to suit you, helps to correct your sitting posture and prevents neck and back pressure when you are working, watching videos or when your child is reading on the kindle desk. Heat Dissipation:The perfect laptop stand that uses thermal material to raise the computer, thus providing an open space for increased air flow, helping to keep the computer laptop cool and prevent overheating and bumps. Portable tablet stand for desk, home, school, office or travel. Anti-slip rubber mat:The non-slip rubber pads on the stand prevent the laptop from sliding around without damaging the laptop case. The triangular support design keeps it from wobbling and won't shake the laptop when typing.