Review on Norpro Cup Warmer with Decorative Design by Heidi Thompson

This coffee cup warmer does just that, keeping your coffee hot enough to drink without staying warm. I've researched and studied the answers of many and this one got the nod. I use a 14 ounce double wall stainless steel mug I bought from Revain, it's perfect. Here is a link to that bowl. Stainless Steel Coffee Mug with Lid by Avito - 14 oz Double Wall Insulated Coffee Mug - Best Value - Healthy Choice, BPA Free - Impact Resistant & Leak Proof. I'd say any stainless steel mug works well, like mine on my computer desk. It gets a little warm underneath, so don't put it on paper or anything like that. And be careful little hands can't reach it as the area around it will feel a little hot. Very happy with this product.