Jen, in the office was doing some research the other day for Michigan State University and found this new cool product. I was wishing I had it on our rafting trip. The water was beautiful, and the water I was hammered with tasted fresh too; but the safety and quality couldn't be ensured. If I had this filtered water bottle with me that day, I would've been all set. You could dip this baby in a puddle and it would filter. Pretty cool useful environmental logo gift, thought you'd think it was cool too. Have a great weekend.