Thermos 26-Ounce Vacuum-Insulated Hydration Bottle Enjoy a 26-ounce hydration bottle designed to keep drinks refreshingly cold for up to 12 hours Made with Thermax double-wall vacuum insulation to virtually eliminate temperature change BPA free and constructed with an durable stainless-steel interior and exterior Sweat-proof design means no pesky water rings on furniture The twist-off lid protects the spout from dirt and germs