We have found 17 bags that match these dimensions.
No bags found that match the dimensions exactly. We did find some smaller bags, see below.
The bags below are not exactly the size you were looking for, but perhaps you'll come to like them.
40x30x15cm
28L
39x29.5x20cm
39x25x20cm
23L
40x25x20cm
20L
19L
40x28x16cm
linear: 84cm 18L
40x23x20cm
18L
38x27x13cm
linear: 78cm 16L
36x30x15cm
linear: 81cm 14L
35x25x16cm
linear: 76cm 13L
39x28x12cm
13L
30x25x13cm
linear: 68cm 8L
28x19x15cm
~8L
29x20x13cm
linear: 62cm 7L
20x15x8cm
linear: 43cm 2.5L