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

11-12 inch : outside : 34.0*24.0cm inside : 32.5 x 22.5cm

13 inch : outside : 36.0*26.0cm inside : 34.5 x 24.5cm

14-15 inch : outside : 40.0*29.0cm inside : 38.5 x 27.5cm

15.6 inch : outside : 42.0*31.0cm inside : 40.5 x 29.5cm

[Please Notice : Manual Measurement exisits 0.5-1cm error.]