WooCommerce: Gallery Slider Navigation Controls

style.css

// Will need some type of styling as well, something like this as a guess
ul.flex-direction-nav {
  position: absolute;
  top: 30%;
  z-index: 99999;
  width: 100%;
  left: 0;
  margin: 0;
  padding: 0px;
  list-style: none;
}
li.flex-nav-prev {float: left;}
li.flex-nav-next {float: right;}
a.flex-next {visibility:hidden;}
a.flex-prev {visibility:hidden;}
a.flex-next::after {
  visibility:visible;
  content: '\f105';
  font-family: FontAwesome;
  margin-right: 10px;
  font-size: 70px;
}
a.flex-prev::before {
  visibility:visible;
  content: '\f104';
  font-family: FontAwesome;
  margin-left: 10px;
  font-size: 70px;
}

WooCommerce: Gallery Slider Navigation Controls

// WooCommerce Gallery Slider Controls
function bd_wc_gallery_options( $options ) {

    $options['directionNav'] = true;
    return $options;
}
add_filter( 'woocommerce_single_product_carousel_options', 'bd_wc_gallery_options' );