Pls reference the bag outer dimension before your order it :

11 inch :   Outer :  315 x 215 x 25 mm    Inner : 300 x 200 x 20  mm
12 inch :   Outer :  315 x 215 x 25 mm    Inner : 300 x 200 x 20  mm
13 inch :   Outer :  345 x 245 x 25 mm    Inner : 330 x 230 x 20 mm
14 inch :   Outer : 375 x 265 x 30 mm    Inner : 360 x 255 x 25mm
15 inch :   Outer : 375 x 265 x 30 mm    Inner : 365 x 260 x 25mm
15.6 inch :   Outer : 390 x 280 x 30 mm    Inner : 380 x 270 x 25mm

12 inch bag is a little bigger for macbook 12 inch, you can order if you can accept it.
All For macbook 15 inch bag is a little bigger for macbook new retina pro 15 inch.
It is more good for macbook retina 15 inch and new pro Touch Bar 15 inch A1707, pls confirmed your can accept a little bigger. it cann’t fit for other brand 15.6 inch laptop.
For All laptop 15 dot 6 (15.6″) .Suitable for most of the 15.6-inch other brands of notebooks
For other brand 12″ laptop, you can order 13.3″ bag if you can accept a little bigger bag.

It is suitable for laptops of various brands, such as for Macbook , Samsung, HP, Lenovo, Acer, Dell, Toshiba, Apple, Xiaomi, Huawei, etc.

100% Brand New Sleeve bag !! 1. Unique design for laptop, 100% fit 2. Protects your laptop against shock, damage and scratches.

Carry more goods laptop bag

Laptop bag contains multiple pockets, which can carry mobile phones, mice, power adapters, tablets, pens etc.

Include Velvet laptop bags

Laptop bag contains velvet, which can better protect Notebook.

Waterproof Nylon