public static function sync_attributes( $product, $children = false ) {
		if ( ! is_a( $product, 'WC_Product' ) ) {
			$product = wc_get_product( $product );
		}

		/**
		 * Pre 2.4 handling where 'slugs' were saved instead of the full text attribute.
		 * Attempt to get full version of the text attribute from the parent and UPDATE meta.
		 */
		if ( version_compare( get_post_meta( $product->get_id(), '_product_version', true ), '2.4.0', '<' ) ) {
			$parent_attributes = array_filter( (array) get_post_meta( $product->get_id(), '_product_attributes', true ) );

			if ( ! $children ) {
				$children = $product->get_children( 'edit' );
			}

			foreach ( $children as $child_id ) {
				$all_meta = get_post_meta( $child_id );

				foreach ( $all_meta as $name => $value ) {
					if ( 0 !== strpos( $name, 'attribute_' ) ) {
						continue;
					}
					if ( sanitize_title( $value[0] ) === $value[0] ) {
						foreach ( $parent_attributes as $attribute ) {
							if ( 'attribute_' . sanitize_title( $attribute['name'] ) !== $name ) {
								continue;
							}
							$text_attributes = wc_get_text_attributes( $attribute['value'] );
							foreach ( $text_attributes as $text_attribute ) {
								if ( sanitize_title( $text_attribute ) === $value[0] ) {
									update_post_meta( $child_id, $name, $text_attribute );
									break;
								}
							}
						}
					}
				}
			}
		}
	}