<?php
            $args = array( 'post_type' => 'product', 'posts_per_page' => 1, 'product_tag' => 'awesome', 'orderby' => '' );
            $loop = new WP_Query( $args );
            while ( $loop->have_posts() ) : $loop->the_post(); global $product; ?>
              <div id="feat-img-contain">
                       <a href="<?php echo get_post_meta($post->ID, 'vendor-url', true); ?>"> <?php if ( has_post_thumbnail() ) {
                           the_post_thumbnail();}?></a>
              </div><!--end feat-img-contain-->
           <?php endwhile; ?>

            <?php wp_reset_query(); ?>