This is my most prized possession. I simply cannot leave the house without filling this up. Best part about this bottle is it has a built in filter so you have fresh, clean tasting water anywhere. This bottle is BPA free (unlike a few out there) and the filter cost about $10 for a two pack. The bottle itself is $30 bucks and well worth the money. Not only are you doing good for yourself by keeping hydrated, but you are doing good for the environment by keeping plastic bottles out of the landfills. Keeping hydrated is super important and can help lessen the frequency of some binge episodes. Do yourself and our lovely planet a favor and buy one now!