I found a few travel coffee cups in my cupboard and wanted to know which was best for keeping the coffee hot and drinking it hot.
So I took these three I insulated travel coffee cups and did a comparison.
The three I did for comparison were the Thermos 16 ounce travel tumbler, the Reduce Everyday Ridge Thermal Tumbler, the Contigo 20 ounce Snap Seal.
I filled each one with water from a recently boiled kettle and just left them on the counter. After about an hour I measured how much the water had cooled off.
Here is the chart held by my youngest
I prefer in the reduce everyday cup because I cannot drink more that 12 ounces of coffee at a time. Twenty ounces of coffee is just too much for me. I would be just too jumpy. The Thermos has a lid that makes it difficult to drink the coffee.