Icon image is blurry

Hello,

I do have some problems with the size of the icon image. In fact, it is shown blurry on the page.
I have not changed the predefined max size of the product icon in Templates settings.
What might cause this problem?

Thank you.
Martina

I had the blurry image issue with customized responsive design in categories view with 4 images per row. Adjusting the outer container a few pixels up/down solved the Problem. So check the width math.
See also an Explanation here: