Nalgene Easy Sipper - Designed specifically for your NALGENE 32 Oz wide mouth bottle Nalgene's bestselling water bottle for more than 20 years Made of BPA-free Tritan co-polyester with superior impact resistance; dishwasher safe on top rack Suitable for both warm and cold beverages; wide mouth makes cleaning and adding ice cubes easy Opening accommodates most water filters; marked with milliliters and ounces for easy measurement Made in the USA and guaranteed for the life of the product