I dunno know the real name of these style gas containers but if you Google “Honda style” you’ll find them. They have improved their quality over the years but still have mulligans. They don’t travel well. Change of altitudes they implode and eventually split. I like them over the big Bildoe donkey dick cans for fueling the generator and a few other fueling tasks and they fit nicely in the back of the truck. I still use the big VPs but these especially in the 2.5 gal size are handy.