Come and Check Our Branding Solutions.The insulated coffee mug is made from premium 304 food Grade stainless steel, never rust, lead free, easy wash and unbreakable. VACUUM INSULATED TECHNOLOGY: SUNWILL coffee mugs are with double walled vacuum insulation technology, keeping your favorite beverages hot for 3+ hours and cold for 9+ hours. Sweat proof, no condensation. The eco-friendly lid is completely BPA free; silica gasket seals to achieve maximum spill proof capability. Wide mouth drinking hole on the top, straw friendly Pls check inventory and detailed info before placing your orders.