I take this mailers for sending CDs on eBay sales. There are probably even higher quality bubble mailers, but then also cost much more. In my view, the CDs are in very well padded. The dimensions are truly tailored to individual CDs. There's barely room for slippage. Therefore, it is also rather tricky to get a twice as thick CD case in there. It is then no longer possible to use the holes for the terminals pattern. Therefore, then falls off the possibility of the shipment that would (not more than DHL Großbrief goes through) make double CDs because of the thickness priced sense.
That's the little downer at the mailers. Otherwise, the price / performance ratio is optimal.