Contigo Autoseal West Loop 16 oz Stainless Steel Travel Mug with Easy Clean Lid, Gunmetal Newly designed lid pivots open for easy cleaning New lid-lock prevents the AUTOSEAL button from accidentally being pushed while on-the-go Patented AUTOSEAL lid automatically seals between sips to prevent leaks and spills Double-wall vacuum-insulated stainless steel now keeps beverages hot for up to 5 hours or cold for up to 12 hours Top-rack dishwasher safe lid; 100% BPA free