The Lifebottle is a double walled stainless steel drinking water bottle with a vacuum between the layers to keep your drink cool. The idea is that you drink filtered tap water rather than imported bottled water, saving the planet and your pocket. The Lifebottle also does away with the need for the production and disposal of plastic bottles, millions of which now litter our planet. The secret to making tap water taste nice is generally to keep it cool. The vacuum construction does this effectively for up to 20 hours but if you want your drink even cooler an ice stick is available as an accessory. The Lifebottle also has a useful hidden compartment in the cap where you can store tablets, money, keys, etc. Lifebottles can be refilled for FREE anywhere you see the blue refill here sign (or use the tapwater iPhone app).