I recently got a three pack of the Big Backyard Collasible Water bottles, 16oz. They seem really need and I think for some, it will be a great product. I personally like that they are freezable, and so I fill them up with filtered water, throw them in the freezer, then when I pack my husbands lunch I throw them in and they work both as an ice pack and water. The reason they did not get 5 stars is that it only holds 16oz of water, which is not a lot, and also when frozen they are long and take up room in a lunch. They are a great product, I dont regret buying them, they have their purpose and it works.