Custom tax query loop to get products from specific product categories in WordPress

$args = array(
	'post_type' => 'product',
	'post_status' => 'publish',
	'posts_per_page' => 20,
	'tax_query' => array(
		array(
			'taxonomy' => 'product_cat',
			'field' => 'term_id',
			'terms' => array(21,22)
		)
	),
);
$loop = new WP_Query($args);
if ( $loop->have_posts() ) :
	while ( $loop->have_posts() ) : $loop->the_post(); ?>
	<div class="product-card">
		<?php echo get_the_post_thumbnail(); ?>
		<h2 class="product-title"><?php echo get_the_title(); ?></h2>
		<a href="<?php echo get_permalink(); ?>">View Product</a>
	</div>
	<?php endwhile;  
endif;
wp_reset_postdata();