Drinking from a stainless steel bottle is definitely the more sustainable and wiser way to go, but have you ever noticed that something is just a bit off after taking a drink? Does cold water have a small sting of a metallic aftertaste? That is why we created our Puramic™ line of bottles and mugs. Once you use these ceramic-lined, insulated bottles, you won't be able to use a regular stainless steel bottle again.