Durable enough for difficult backpacking treks. Wide-Mouth loop-top water bottle for on-the-go hydration. 100% BPA-free bottle has a wide mouth for easily adding ice and attaching to purifiers or filters. Suitable for warm or cold beverages. Attached leakproof lid doesnt use an O-ring, so theres no need to worry about losing anything. Eastman Tritan plastic resists tastes and odors. Milliliter and ounce markings for easily tracking hydration. Dishwasher safe. Made in USA.