Rotatable and liftable : The tablet holder bottom has a 360° rotated base, and in the middle is an liftable arm, and both ends of the arm can be rotated 180°. Both the bottom base and the top tray come with multiple layers of silicone, which can increase stability, anti-slip, and don't damage the surface of the contact object. And our top back panel has square holes, which is helpful for air flow and heat dissipation. Bottom Bracket : Compared to iPad stands that use locking clamps, which must be taken off the case to use, we use a bottom bracket design that eliminates the need to take off the case and works with almost all tablet computers. And our top back panel has square holes, which is helpful for air flow and heat dissipation. Foldable & Portable : The size of the tablet stand after folding is smaller than A5 paper (6.69''*5.86''), and it is made of light weight aluminum alloy, so you can take it to school, travel, etc. by simply putting it in your bag. The charging port is reserved on the stand, so you don't have to take the tablet down when charging.