I think we all know how wasteful buying several plastic water bottles in a day can be.  And yes-using a nalgene or sigg bottle is a great way to solve this problem.  

And yet throughout the day, that water will get warm....or it'll get slurped up, and you'll definitely be lured into buying an ice-cold plastic bottle of H2O.

Well not anymore! BRITA recently came out with its Brita Bottle, a reusable water bottle with a filter inside!  Now you can stay hydrated on the go, and refill your bottle at any tap, knowing you'll get another cold, filtered bottle of water in minutes.

How come nobody thought of this earlier? Way to go, Brita! 

http://www.brita.com/products/filtering-bottle/brita-bottle/