1.Question：What was the fan question on the order? No fan or double fan
Answer：There are two types of the laptop desk, one has fan, one doesn't have fans. Fans could help to cool your computer.
2.Question：How much space do you need for this to fit in a backpack?
Answer：The bag would need to be able to hold an item approx 45 x 26 x 4(cm) . It seems more like the size of a briefcase.So If your bag is the normally size, the item could be portable easily.
：What is the maximum height that this raises to?
Answer：Each section of the legs is almost 10 inches long. If you stand it on the tip, it can reach 27 1/4 inches. If you straighten the top 2 sections, but leave the last one to balance, it reaches 18 3/4 inches.
4.Question：Can the mousepad be put on the left side?
Answer：Yes, you can put the mouse pad on the left side.