What is a good case/sleeve for my MacBook Air?

Hi!

I am going to buy a MacBook Air sometime this week 🙂 what I was wondering is what would be the best case/sleeve for it? I don't want it getting scratched and damaged.

I was thinking of going with one of the sleeves from Etsy, but I don't know if they are good or not. Or maybe an invisible shield? Also, maybe a case for the air itself and a sleeve? I don't know, I'm a first time buyer for a MacBook so I want to keep it nice and safe.

Thank You :]