flat bottomed mug

Hello, I use a mug warmer throughout the day, but I find that it doesn't work very well as the mug I'm using has a bit of a concave bottom (and most that I have do). Does anybody know of any flat bottom mugs,perferably one that doesn't taper down towards the base (as I am clumsy) to achieve

Kleinley Classic Flat-bottom 17 oz. (3.35 x 5.7 inches) with lid and ceramic straw, modern minimalist travel mug, kitchen coffee mug

VOBAGA 11 oz Beverages Cup Coffee Mug Tea Cup with Flat-Bottom Warming – vobaga

flat bottomed mug

Pfaltzgraff Yorktown Flat Bottom Coffee Cup Tea Cup Blue and White Floral Stenciled Pattern Stoneware Vintage

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Resistant 1 pcs Kitchen Supplies Reusable Flat Bottom with Handle Wheat Straw Cup Drinkware Drinking Cup Coffee Mug - AliExpress

Howay Flat Bottom Mug with Wood Lid, Ceramic Tea Cup for Coffee Warmer, Flat Bottomed, Wooden Handle, 14oz

Sasha Barrett - Flat Bottom Mug - sba018 — In Tandem Gallery - Bakersville NC

Howay Flat Bottom Mug with Wood Lid, Ceramic Tea Cup for Coffee Warmer, Flat Bottomed, Wooden Handle, 14oz