Custom Attributes size, color on the cart page

I’d like to add the custom attributes size, color to the cart page.

global $product;
$terms = get_the_terms( $product->id, ‘pa_color’);
foreach ( $terms as $term ) {
echo $term->name;
}

That bunch of codes didn’t work.

Any help appreciated.

https://wordpress.org/plugins/woocommerce/