The 40 oz double-wall thermal mug is crafted from premium 18/8 stainless steel, offering exceptional durability and temperature retention. Equipped with advanced vacuum insulation, this mug keeps beverages hot or cold for hours. Its dual-purpose threaded lid includes both sip and straw openings for versatile drinking options, making it perfect for any drink preference. With an included straw and a sleek powder-coated finish, this mug not only resists scratches but also provides a comfortable, slip-resistant grip. Ideal for on-the-go hydration, this stainless steel thermal mug is a stylish, practical choice for keeping drinks at the perfect temperature all day.