For any traveling and worried about backglasses, I found a cool box. Not sure if it's been posted on pinside before.
Anchorbox.com has what they call a mirror box. 30" x 40" x 3". The dims are misleading since it's a sliding box. One half slides into the other. Mine is 30x30 right now. Perfect for wrapped glasses.
A pack of bubble wrap and my two xenon glasses are safe and sound during a resto. Box is only $5 or so plus shipping...