Thanks for posting this. I had to get some of these.
They are a standard 12 oz beer/soda can with a printed plastic wrapper encasing the outside. Under the cap is a large pull tab.
In the picture of the can bottom you can see some small denting from the ammo inside, but seems sturdy enough. Does not appear to be something that will take rough abuse, but a great idea for camouflaged / non-obvious ammo storage. The Fiocchi canned heat containers were a good idea too but they appear to be discontinued. These new ones blend in and look like a sports drink or local brewery can.
Gives new meaning to a six pack. Only comes in FMJ at this time.
I do not plan to open one at this time but I have shot enough Fiocchi ammo to know it is quality stuff.