Functions exactly as advertised. I use it as an alternative to the "tab groups" in google chrome. The containers also sync across devices(not on Android, ios I don't know) so that's pretty neat.

I also recommend "facebook containers" which use the same underlying tech to keep everything facebook in a separate sandbox

Lots of power when you need it, basic tab containers when you don't. Sane defaults. Seamless integration with Firefox containers and Mozilla's VPN.

These tools are very powerful, and many people hold containers very highly as these are so helpful for privacy, organization, and control
:)
this is an amazing addition to firefox, thank you