Pls reference bag dimension ( length x width x thickness ) before your order it.

11-12 inch bag : Outer dimension : 315 x 220 x 30 mm. Inner dimension : 305 x 212 x 25 mm.
13.3 inch bag : Outer dimension : 345 x 240 x 35 mm. Inner dimension : 330 x 230 x 30 mm.
14 inch bag : Outer dimension : 370 x 265 x 40 mm. Inner dimension : 355 x 245 x 35 mm.
15 inch bag : Outer dimension : 375 x 270 x 40 mm. Inner dimension : 360 x 250 x 35 mm.
15.6 inch bag : Outer dimension : 390 x 275 x 40 mm. Inner dimension : 380 x 265 x 35 mm

For Macbook New 13.3 inch, A1706, A1708, A1932, A1989, they all are same dimension bag,
Outer dimension 315 x 220 x 30 mm , Inner dimension : 305 x 212 x 25 mm .

13.3" bag is good for macbook old air and pro 13.3 inch
We have vertical and cross model bag for choice, pls careful make choice as you need.