When 27 oz isn't enough, this is. The mother of all water bottles, the 40 oz is great for long car trips, camping, a late-night session at the office, trips to the beach, or any time you need to carry a lot of liquid and don't have the option of easy refills.
Even if your Klean Kanteen sits in your car, your backpack, or on your desk for weeks, your water will stay fresh and clean-tasting.