Triumph International make Lingerie for other Companies including the Littlewoods Group where they trade under the Brand name of 'Under Tones' & Marks & Spencer where they use the 'Marks & Spencer' name instead of their own.

Each Company that they manufacture for dictates the size specification so a size 36B with Triumph own label could be different to a 36B in Marks & Spencer or Littlewoods.  This is the same when purchasing Lingerie from other leading brands.