Review on ☕ Contigo Handled AUTOSEAL Vacuum-Insulated Stainless Steel Travel Mug - 16 oz. Gunmetal, Easy-Clean Lid for Travelers by Jesus Gallagher

It's definitely leak proof, the design is amazing, but I've reheated my coffee in the microwave before placing it in a mug of simmering water to make it be hotter and last longer . After 30 minutes my coffee is warm. Ok, I'll update this review. Maybe this mug doesn't keep my coffee hot like other travel mugs I've had, but I can't tell you how many times this mug has saved my drink from spilling! I've knocked this thing off my bedside table so many times that not a single drop has fallen onto the floor and saved my rug. I knocked it out of the cup holder in the car and the iced tea wasn't gone. I recommend this mug! I use it every day, and maybe the warm coffee is a compromise for a travel mug that's completely leak-proof. I love it!