These 32 ounce water bottles are made with BPA/BPS free, durable Tritan plastic - safe for the environment and safe for what you drink from them. Expertly crafted threads for leak-proof hydration and a wide mouth that’s perfect for all types of drinks, even ice cubes. Proven in the elements and ready to withstand even the most rugged conditions. They are the perfect size and fit for the Umpqua ZS2 Water Bottle Holder. Made to last a lifetime and 100% made in the USA.