I have a 2024 MacBook Air, and it fits perfectly. Of course i fitted it incorrectly at first, so tip is to start with the bottom( that has obvious cut-outs ) and the the top seems like it can go either way. Doesn’t add much size and will keep mucky fingers off the actual case (not off the screen though 🤣) Not sure if there are any “drop” protection qualities about this, but the material feels like it would easily shatter if it dropped - i’m not going to test it. The ONLY thing to be mindful of is that your MacBook is quiet because it doesn’t use fans to cool down, it uses the body of the laptop. Putting a cover on that body? I’m thinking it will act like a duvet, but i used it yesterday and it seemed ok.