XSKN 15 Inch Laptop Sleeve Choose Size Instruction:- External dimensions: 416*296*24mm (16.37*11.65*0.94 inch) Internal dimensions: 395*275*18mm (15.55*10.82*0.72 inch) - suit for Macbook pro 15.4 inch - suit for 2019 Macbook Pro 16 inch A2141- suit for 2021-2023 Macbook Pro 16.2 inch A2485 A2780 A2991- suit for 2009-2013 Macbook Pro15.4 inch A1398 A1286- suit for most 15.4 inch , 15.6 inch laptop or similar size laptop- suit for all 15 inch laptops with outer size no bigger than 380*260mm, not suit for Lenovo Y500/Y510/Asus s550Note: Important: Choose The laptop computer sleeve bags must choose the inside measurement size.Due to the soft material of laptop sleeve, the internal dimensions of length, width, and height can be interchanged within a small range. If one side does not exceed 5mm, it can be packed, but if both sides exceed 3mm, it cannot be used.Not all 12-inch, 13.3-inch, 14-inch, and 15.6-inch laptops can choose 12-inch, 13.3-inch, 14-inch, and 15.6-inch laptop computers sleeve. Because most new computers now use narrow-sided designs, you need to refer to your laptop computers actual choose the appropriate size by length and width.When you don't know which size your laptop computer is suitable for, you can use a ruler to measure the length*width*height of your laptop computer, or go to the website where you purchased the laptop computer to find the external size of your laptop computer. Package Content:- 1 x XSKN Laptop Sleeve 15 inch