We use these

http://www.turtlecase.com/catalog/ProductFamily.aspx?id=107&srcID=107&srcTarget=Department

The tapes fit nice and snug, inside the jewel cases.


"We also use Iron Mountain, without any complaints. We put the LTO tapes
in
their clear white cases and then in a soft "pizza" bag to be shipped off
site. I have had problems with the leader pins falling out of the
cartridges - I don't know if this is related to them being shipped offsite
though.

curtis.stewart AT lawson DOT com