Today only (10/15) or while supplies last, this CamelBak Groove .6L Filtered Bottle 2-Pack drops to $14.99 at Woot! Even with $5 shipping that matches the best price we could find for one of these bottles individually. Wherever you are, these bottles filter your water on the go. For the environmentalist in you, the filters each last about three months and filter an amount of water equal to 375 bottles. Even better, they are dishwasher safe and come with a lifetime warranty. Sales tax is not charged in most states. Act fast, we don't expect these to last.