Lately I discovered a very interesting design of a can. Typically, a can, once opened, cannot be closed again. So it needs to be emptied in one go and needs to be carried around with care to avoid spillage. I was delighted to find a resealable can - photos below.
There is a little plastic slider instead of the typical metal hole. To open the can for the first time, the little part with the stripes (first photo, left side of the black plastic part) needs to be pushed up. This might be a tricky task. I ended up using a ballpoint pen instead of my finger. When the striped part is pulled up, the rest of the closure can slide to the left side and the can is open (second photo). Sliding the striped part, now upright, to the right into its original position closes the can. As far as I can tell, no fluid is leaked when can is closed, even after being opened several times.
The can design belongs to an energy drink. Specifically for an energy drink it appears to be useful to have a resealable can. I tend to consume most energy drinks over a time frame of 1-2 days. With a resealed can the content cannot be accidentally spilled and remains fresh (sparkling).