Please refer to following size list,the dimension is laptop's.
If you are not sure,please feel free to contact with us.


11.6 air: 300×192×17mm
12 inch air: 280.5×196.5×13.1mm
13.3 air: 325×227×17mm
13.3 retina: 314×219×18mm


And the bag may be a little bigger than laptop,when your laptop is not Apple Macbook laptop.
11 inch sleeve
Huawei Matebook:278.8 ×194.1 ×6.9mm
Surface Pro 1/2 with keyboard: 274.57 ×172.97 ×13.46mm
Lenovo Yoga3 11; 290 ×197 ×15.8mm
Lenovo IdeaPad 100s: 292×202×17.5mm

13 inch sleeve
Surface Pro 3/4 with keyboard: 292.1×201.42×8.45mm
Dell XPS 13 Series: 304×200×15mm
ASUS ZenBook TP360CA：323×220×13.9mm
Lenovo thinkpad x250: 305.5×208.5×17.7 mm