The bottle is made from glass that is 5/16" thick and weighs nearly 3 lbs empty. It is essentially an exact replica of a standard beer bottle scaled up in every respect.
That being said I treat it like a standard growler, keeping it cold at all times, and never exceeding 2.5 volumes, or about 15 PSI.
I have been using the three that I have made for over a year with no issues.
Primary: Dry Dock Breakwater Pale Ale, Raspberry Wheat, Cream Ale, Rye IPA,
Secondary: Brandy Oak Irish Red
Keg: Belgian Black & Mild, Golden Dragon 10.9%, American Brown Ale, Devil's Sin Amber IPA, Boundry Waters Pale Ale