WC attributes

<?php

function acme_wc_attributes() {
    global $product;

    echo "<pre>";

    foreach( $product->get_attributes() as $attr ) {
        printf(
            "%s: %s" . PHP_EOL,
            wc_attribute_label( $attr->get_name() ),
            implode( ', ', $attr->get_options() )
        );
    }

    echo "</pre>";
}

add_action( 'woocommerce_after_single_product', 'acme_wc_attributes' );