Peso total: 40
Volumen: 0
Largo: 0
Ancho: 0
Alto: 0
Medidas: Array
(
    [0] => Array
        (
            [largo] => 
            [ancho] => 
            [alto] => 
            [cantidad] => 1
        )

)

Clases: Array
(
    [todas] => 40
    [sin-clase] => 40
)
Tarifas: Array
(
    [sin-clase] => Array
        (
            [0] => Array
                (
                    [peso] => 30
                    [importe] => 6
                )

            [1] => Array
                (
                    [peso] => 31
                    [importe] => 0
                )

        )

)