I found this through "The Daily Green" and just ordered a set~ buy 4 get one free!!
How Fantastic are these because face it when you have to lug those water bottles home from the office it's gets to be a hassle on some days~ but I just grin and bare it as I know it's for the greater good. BUT with these handy dandy water bottles you can fold them up and shove them in your purse or even pocket! and you can freeze them too boot! get for those people who have to lug their kids around to sporting events~ Sorry folks my kids aren't athletic so I didn't have to get up at the butt crack of dawn on Saturdays and Sundays to watch them play sports.
Check them out at http://vapur.us/