"sleeper suits" my eye. Cheap PJ's with a logo on the breast do not make a sleeper suit. These wouldn't retail for more than a tenner in Primark, tops. And they shrink like hell, indicating the cheapest of cotton.
At least the sizes are better than Virgin or Qantas, but these are most definitely not fashion items for anyone to covet. Always feel amused at people using them on board later, or even in lounges.