If you want the best fit, you might want to look at sleeves made for Surface Laptop, they'll fit better because of the 3:2 aspect ratio and have very similar dimensions. If you don't mind the awkward fit from MacBook/general sleeves, you'll have a much easier time finding an attractive bag.

Also, I like this sleeve a lot. Really practical.

https://www.amazon.com/dp/B071WMF4SY/

edit: updated link, way cheaper on Amazon