Sweet and juicy. Perfect for picnics and backyard barbecues. The watermelon could be considered the official fruit of summer -- but its taste is a treat anytime. Its big size and bright green color make it instantly recognizable at farmers markets and roadside produce stands. Unlike the fleshy fruit, Watermelon Flavor Extra Strength 5-hour ENERGY® shots aren’t sold by weight or measure. In fact, each shot contains less than 2 ounces of liquid. But what they lack in size, they make up for in their ability to give you a long-lasting boost.