First of all, the can looks great. Very delicious looking. This drink is NON CARBONATED. That's an important thing to know before you drink it, or you may be dissappointed. Contains 100% juice.
Rumba Energy Juice is more like Rumba Energy Crap. I should say, if you love citrus fruits, and the flavor they invariably have coming out of an aluminum can, you may like the taste. For me, 2/3 of a can was a much as I could consume before I had to place the remainder into a trash receptacle. I didn't even concern myself with recycling, as I felt the aluminum may be permanently tainted.
Now that I've said the unforgiving part, if the makers are reading this, and on the verge of crying, I'll state that it is 100% fruit juice (which is less important to me, but may be a deciding factor for some), it's not anchored by caffeine (which I feel an energy drink should be, but again, "to each his own"). It's also very low in sodium, and could be a great morning beverage for those who like orange juice in the morning. It's loaded with vitamins and so forth, and overall gives you a lot of energy, if you can drink it.
Size is near 16oz. for the industry standard $1.99 price.
Rumba is the worst excuse for juice I've ever tasted. Even when I try to think back to grade school when my parents gave me all those generic juice boxes and cans. The taste of this was much worse than those. It tastes like juice if you take out all the flavor and replace it with aluminum and dirt. I'll admit I didn't shake gently for the first sip, which Rumba recommends, so I thought the flavor might be better after shaking.... All that seemed to do was shake up the dirt that had settled on the bottom of the can. I've never had crunchy juice before. Some of you may think that what I'm talking about pulp, but I'm not. This was NOT pulp. It was dirty gritty crap that you could feel crunch between your teeth.
So to get another opinion, I gave Rumba to my brother who drinks almost a gallon of oj a week. He said that it didn't taste like orange juice, but more like pinapple juice with a hint of aluminum. I don't agree with him because I like pinapple juice. Besides the can has a huge orange on the front of it and their website says the flavor should be orange. So they failed to achieve the flavor they aimed for.
I can't rate the energy because I couldn't finish it. I didn't even drink 1/3 of the can. I guess since Rumba has tried to offer a natural energy drink gives them some points in my book. Which puts them slightly above Omega.