I have a Macbook Air 13 inch (2019 model). I bought Amazon Basic's 13" as well as 11.6" pouch. None of them fits the laptop. I also purchase "Gizga Essentials Laptop Bag Sleeve Case Cover for 13-Inch," which didn't fit as well. Luckily this sleeve claiming internal dimension of 12.5 inch fits my 13inch Macbook air. Thanks!