This NEW Nalgene design is called Bottle Clothing. It is completely insulated to keep your hots hot and your colds cold! It is designed for Nalgene 32oz Bottles, but any brand's 32oz bottle will fit. The exterior of this carrier is very stylish, much nicer than the traditional black nylon. The zippered pocket is really nice to keep some cash, keys or driver's license securely enclosed. This is a perfect bottle carrier for anyone, whether you are just taking a casual walk, a fast run, or a hike in the woods! Bottle not included.