Double-Wall Insulation: Designed with advanced thermal technology to keep hot drinks hot or cold beverages cold for up to 12 hours.3-Cup Sharing Design: The main lid doubles as an insulated serving cup, while the set includes two additional matching mugs featuring integrated side handles for easy sharing.Premium Materials: Built from durable food-grade stainless steel inside and outside, offering a sleek, leakproof construction optimized for outdoor travel, office use, and commutin