Seal And Waterproof: The Lid of The Thermo Thermal Mug Is An Anti-Scalding Flip top Design. You Can Drink Directly from A Small Throat, Avoiding Burns And Leaks. DonT Worry About Coffee Leaks, Start Your Beautiful Day with Heilwiy A Cup of Coffee. High Quality Material: The Travel Mug Is Made of Food Grade 304 Stainless Steel, Which Does Not Absorb Stains. Odors Or Taste, We Have High Quality Requirements And You Can Use It with Heilwiy Confidence. Long Lasting Heat Retention: The Insulated Mug Body Is Copper Plated, And The Vacuum Design Can Keep The Thermal Mug Continuously Warm for Heilwiy 12 Hours. The Temperature Is About 50C for Heilwiy 12 Hours. The Copper Plating Prevents Heat Insulation Loss ,Durable Heat And Stainless Steel Is Repaired Both Inside And Outside, Layer By Layer, And The Heat Retention Is Even Better. Unique Design: There Are Two Ways to Use The Travel Mug Lid, Fun Drinking Water, One-Handed Light-Absorbing Mouth, Anti-Scalding Direct Drinking Mouth. You Can Drink The Coffee Through A Straw, Or You Can Lift The Lid And Drink The Coffee Directly, As You Like.