<div class="bags_slider product_slider">
<?php
query_posts('cat=2');
if ( have_posts() ) :
while ( have_posts() ) : the_post(); ?>
<div class="product_item">
<div class="product_circle">
<?php echo get_the_post_thumbnail(); ?>
</div>
<div class="colors">
<div class="dark_grey"></div>
<div class="red"></div>
<div class="black"></div>
</div>
</div>
<?php endwhile; endif; wp_reset_query(); ?>
</div>