title: Post thumbnail options in Woocommerce 3.3
body: <p>I have a problem with my website's post thumbnails. The products image are shown as <code>100x100 px</code> images (too small).</p>
  
  <p>I would like to find the source code for thumbs from front-page, because I don't like that they are displayed in such small size. The original size of my images is <code>300x250 px</code>.</p>
  
  <p><strong>Where is the location of the code that sets the size of products thumbnails? How can I change the thumbnails size to the original one?</strong></p>
  
  <pre><code>&lt;a class="product_thumbnail_wrap" href="&lt;?php the_permalink(); ?&gt;"&gt;
  &lt;?php
      /**
      * woocommerce_before_shop_loop_item_title hook
      *
      * @hooked woocommerce_show_product_loop_sale_flash - 10
      * @hooked shophistic_lite_template_loop_product_thumbnail - 10
      */
      do_action( 'woocommerce_before_shop_loop_item_title' );
  ?&gt;
  &lt;/a&gt;
  </code></pre>