I used this.

<?php 

$posts = get_posts(array(
    \'posts_per_page\'    => -1,
    \'post_type\'         => \'product\',
    //\'orderby\'         => \'title\',
    //\'order\'           => \'DESC\',
    \'tax_query\' => array( array(
        \'taxonomy\'         => \'product_cat\',
        \'field\'            => \'slug\', // Or \'term_id\' or \'name\'
        \'terms\'            =>  \'winter-products\' // A slug term
        // \'include_children\' => false // or true (optional)
    )),
));

if( $posts ): ?>
    <h3>Winter Products</h3>
    <ul>

    <?php foreach( $posts as $post ): 

        setup_postdata( $post );
        $post_id = get_the_ID();

    ?>


            <?php if( have_rows(\'extra_info\', $post_id) ): ?> 
                <li>

            <strong><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></strong> 

                <ul>

                <?php while( have_rows(\'extra_info\', $post_id) ): the_row(); ?>

                    <li><a href="<?php the_sub_field(\'link_url\'); ?>" target="_blank"><?php the_sub_field(\'link_title\'); ?></a></li>

                <?php endwhile; ?>

                </ul>

            <?php endif; ?>
        </li>

    <?php endforeach; ?>

    </ul>

    <?php wp_reset_postdata(); ?>

<?php endif; ?>