OK I think I have a very average coffee mug that doesn't taper and only part of the bottom touches the surface it sits on (concave). I don't have a lid on my ceramic mug, so some of the heat is definitely coming from the top. This product barely keeps my coffee warm. This is my favorite mug that is 25 years old now and I'm not interested in looking for a flat bottomed mug but I still don't think it would be a regular coffee cup or mug. It extends to the bottom of the cup, the last 1/2 inch or 1 inch of coffee actually heats up nicely depending on how long I let it sit on the heating pad. In addition, it cannot beat regular coffee mugs in terms of heat dissipation. I didn't buy it to drink warm coffee. The touchpad is a nice feature. You need a few ounces of WEIGHT to activate it. As long as you have regular ceramic mugs, it should activate normally, even if it's almost empty. 2 stars.
Bosch VeroCup coffee machine 100 TIS30129RW, black
106 Review
Coffee maker VITEK VT-1517 BN, brown
102 Review
De'Longhi EC685M Dedica Deluxe Espresso Machine with Automatic Features, Metallic
170 Review
De'Longhi ESAM3300 Magnifica Super Automatic Espresso & Coffee Machine in Silver - Enjoy Your Perfect Brew Every Time!
110 Review
GOBAM Wood Rolling Pin: The Perfect Dough Roller For Baking Cookies, Pie, Pizza & More - 13 X 1.38 Inches
35 Review
100-Pack Of Disposable 18-Inch Piping Bags For Cake, Cupcake, And Cookie Decorating - Perfect For Icing And Frosting!
41 Review
2-Pack European Grade Silicone Bunte Cake Pan Set - Non Stick Bakeware Fluted Tube Mold For Jello, Gelatin & Cakes | 9 Inch Baking Pans | Aokinle | BPA Free
38 Review
AmazonBasics Silicone Baking Mat Sheet
48 Review