First off, the pen holder set up was falling apart when I bought it. I tried to fix it but it didn’t hold. The pen holder itself is super cheap and flimsy. I ended up removing this all together. 
And secondly, it feels weird to have the part that raises to be off center. I wish it raised up in the middle and had a little space on either side. 
Lastly, that part that catches your computer from skidding off is right where your wrist would land if you use your trackpad. I ended up removing it and not tilting it much so it doesn’t slide off. 
I would not suggest this…look for something that is better quality and more ergonomically functional. 
If I kept the box then I would definitely return it!