Wootique Blurry Images

Play around with the sizes in the following:

Woocommerce -> Settings -> Catalog (at the bottom of that page, see Image Options)

and also check

Settings -> Media -> Image sizes

Also activate plugin Regenerate Thumbnails.

Go to your admin area and select Plugins -> Add new from the menu.
Search for “Regenerate Thumbnails”.
Click install.
Click activate.

To use:
Tools > Regen thumbnails