Blue Can Water is changing the way families store water for emergencies. With a 50 year shelf life, you'll only need to think about water once. There's no need to treat, rotate, or worry about having enough water ever again. Blue Can Water is packaged in 12 oz. cans and come 24 to a case. Each case is enough water for 1 person for 4 days. To read more about Blue Can Water, visit their website www.bluecanwater.com.