These are an excellent choice for for water storage. The average amount of water storage is that a person needs 1 gallon of water per day for survival. I recommend this product and that you have at least enough water saved up for 6 months in case of emergency. this 10 pack is the perfect count for a 1 month supply for a single person. it stacks and you can store it easily in lots of ways. Best part, I have purchased quite a few of these and only had 1 manufacture issue. Waterbrick International and greatofferstock.com stepped up quickly and resolved the issue and got me replacements. I recommend these to all my friends and family.