How to create this shirt pattern?

[levagabond]

Hi. Would anyone know how to create a shirt pattern like this? I was thinking maybe using different filters like zig-zag, wave and rain?

[c.pfaffenbichler]

Filter > Distort > Displace with an appropriate Displacement Map might be one option.

[Semaphoric]

Maybe this:

In a smallish doc, add an alpha channel, and draw two vertical jagged lines on it. Here I made a path with the Pen tool, and stroked it with a 3 pixel brush:

    

Run Filter > Stylize > Wind [Blast] a few times from both directions:

    

Now Image >Adjustments > Threshold. Chose a value that gives a width you like, without any gaps.

Fill the background layer with the first color [here, black], Load the alpha channel as a selection, and fill with the second color [white], and deselect. Finally, use the Paint Bucket to fill the middle part with the third color [red], and add a little Motion Blur to soften it up slightly:

    

You may wish to rotate this by 90 degrees before making a pattern of it.