.row
  .col-md-4
    = f.input :courrier_name, label: 'carrier\'s name', input_html: { name: "sponsor[swag_transportation][#{index}][carrier_name]", value: name_value }
  .col-md-4
    = f.input :tracking_number, input_html: { name: "sponsor[swag_transportation][#{index}][tracking_number]", value: tracking_value}
  .col-md-4
    = f.input :boxes, as: :number, in: 0...999, label: 'Number of boxes', input_html: { name: "sponsor[swag_transportation][#{index}][boxes]", value: boxes_value }