 <p><a href="http://yoursite.com/checkout/?add-to-cart=" rel="nofollow">http://yoursite.com/checkout/?add-to-cart=</a>{ID}</p> <p><a href="http://yoursite.com/cart/?add-to-cart=" rel="nofollow">http://yoursite.com/cart/?add-to-cart=</a>{ID}</p> <p>Replace {ID} with the Post ID of the specific Product:</p> <p>result must be something like this:</p> <pre><code>http://yoursite.com/cart/?add-to-cart=&lt;?php echo $post-&gt;ID; ?&gt; </code></pre> <p>I hope it helps</p>