Double-wall vacuum insulation keeps drinks cold for up to 20 hours and prevents condensation. One-touch drink spout for quick and easy one-handed drinking. Spout shield covers silicone spout, keeping it clean and protected when not in use. No plastic odors or taste with FDA-approved, BPA-free materials. 20 oz. capacity The AUTOSPOUT Sheffield vacuum-insulated stainless steel water bottle has a double wall and vacuum insulation to keep your drinks cold for 20 hours and eliminate external sweating. The Sheffield Water Bottle features a one-touch-button spout release for convenient one-handed drinking. A spout shield protects the spout from dirt and debris when not in use.