Feature image blurred

http://test.aangepastwonen.info/product/douchezitting-met-rugleuning-en-armleggers/

How is it possible that my installed feature image is blurred/ not sharply visible?
I tried different things but don't know how to solve it.

In your preview the feature image is just sharp.

Thank you.

 

Hey !

Image that you have used is very small in size.
Please use image of bigger size(approx. 300*300 px).

Thanks,
Praveen

 

I tried but it makes no difference the picture is still not sharply visible.

Is there something else I can try to make it sharp?

 

Hello !

Please deactivate less required plugin may be that plugin is conflicting with woocommerce plugin.

Thanks & Regards
Pramod