It’s a very large can of generically budget energy drink. It’s a sweet mix, but slightly watery even though it keeps a decent 31.5mg/100ml of caffeine in tow. Mega hit of energy, and a rather nice flavour. I’d buy it again. One thing you should note is that it appears to have changed its name. The can I purchased was named XS Energy, but the web site declares a name change to XC Energy, presumably because of a trademark issue or other such problem.