May want to try this. Used it last week to protect the Reader. Have some sheet steel and plastic to insert into the case but not the time right now to try it. But was ok just in my carry on baggage.
https://www.mobileread.com/forums/sho...8&postcount=71
Also started a survey on if there seem to be a flaw in the extra covers...
https://www.mobileread.com/forums/showthread.php?t=8481