<?php
//define menu
function custom_new_menu() {
register_nav_menu('svg-icon-menu',__( 'SVG Icons menu' ));
}
add_action( 'init', 'custom_new_menu' );
<?php
//can be called anywhere to show menu
wp_nav_menu( array(
'theme_location' => 'svg-icon-menu',
'container_class' => 'menu-svg-icons' ) );