Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Session Manager by lopardo
Rated 5 out of 5 stars
I couldn't live without this add-on, it's very useful. It lets you save all your sessions (opened windows and tabs) so you can reopen them later, or reopen individual tabs or windows.
Also, the undo closed tab button is very handy.
Take a look at the options window so you don't miss any of its useful features.
The only thing that's missing could be Sync integration, so you could sync your saved sessions across different devices.
To create your own collections, you must have a Mozilla Add-ons account.