Collapsible Pop Bottle

Just because you need to take water along for outdoor sports doesn't mean that you have to use a huge and heavy bottle. As you will find water dispensers almost everywhere, what you need is merely a collapsible bottle which could be easily carried in bag. When you feel thirsty, just push the bottle's cap to the side, push its bottom half into the top, fill into it some water by pulling its bottom, and then it's time to enjoy water.

Source: inewidea.comAdded: 8 March 2010