12 inch =36 * 26 * 7 cm    Interne 33 * 24 cm  Support 11 12.5 inch notebook  

13 inch =37 * 27 * 7 cm    Interne 34 * 25 cm  Support 13 13.3 inch notebook  

14 inch =40 * 30 * 7 cm    Interne 37 * 26 cm  Support 14 14.5 inch notebook  

15 inch =44 * 34 * 7 cm    Interne 39 * 27 cm  Support 15 15.6 inch notebook  

17 inch =47 * 37 * 7 cm    interne 43 * 31 cm  Support 17 17.3 inch notebook