array(1) {
  ["flat_rate:1"]=>
  object(WC_Shipping_Rate)#17222 (2) {
    ["data":protected]=>
    array(9) {
      ["id"]=>
      string(11) "flat_rate:1"
      ["method_id"]=>
      string(9) "flat_rate"
      ["instance_id"]=>
      int(1)
      ["label"]=>
      string(20) "Spedizione Nazionale"
      ["cost"]=>
      string(4) "6.80"
      ["taxes"]=>
      array(0) {
      }
      ["tax_status"]=>
      string(7) "taxable"
      ["description"]=>
      string(0) ""
      ["delivery_time"]=>
      string(0) ""
    }
    ["meta_data":protected]=>
    array(1) {
      ["Prodotti"]=>
      string(33) "Color Acrylic Powder 11 × 1"
    }
  }
}