Largest Pocket warmers

I have a few zippo hand warders. However, my go to, is the S Boston. It lights up quickly and is very dependable. I have started to wonder what are some of the larger models? Can anyone tel me the names of some larger models.
Thanks
Jim Escalante

I have purchased a few hand warmers since i posted this question. I bought a Jon-e GI (giant). It is the largest one I have found. It is 4 5/16th inches tall by 2.75 inches wide and 1.25 inches thick, (110mm tall x 70mm wide x 33mm thick. This one fills the hand very well. I also bought a new Peacock, Giant size, made in Korea. This one measures 4.25 inches tall x 2.75 inches wide x .75 inches thick (108mm tall x 69mm wide x 19mm thick). The peacock has the nicest protective bag of any that I own. It is thick and has a loop on the top opening. This could be used to attach it a lanyard and be warn around your neck and stay close to your chest.

Thanks for the info! I was gifted a Giant last year, and, along with the S-Boston's, it really has become one of my favourites.