Wide-Mouth Cantene made of multilayered material for stiffness, strength, and stand-up capability, yet is soft and flexible to be folded or rolled when empty * Wide opening accepts ice cubes and provides easy access for cleaning, and also accommodates all major water filters * Guaranteed leakproof system and loop-top cap offer reliability and versatility, and gusseted bottom stands upright * Dishwasher safe on the top rack, and withstands temperatures from -20 to 220 degrees Fahrenheit * Guaranteed for the life of the product; made in the USA