Travel case- overkill

I don’t put too much faith in a lipo sack for storage or charging.
I purchased a Bat-Safe as I have confidence in them after watching their videos proving the retention of a fire caused by overcharging.
I nearly blew up a battery while charging (still do not know what I did wrong? Over current, wrong charger setting, dunno?). Anyhow caught it when it had swollen up the size of my fist. Super scary!!! So after a bit of research, the Bat-Safe looked to be the only real answer for containing lipo fires. They make two sizes and cost less than the price of one battery.