We bought these mugs a while ago and so have tested them in all sorts of environments. 1. They definitely keep hot drinks hotter for longer compared with a ceramic mug. 2. These mugs do not heat on the outside and so do not damage plastic or wooden surfaces. 3. Unlike single walled stainless steel mugs, drinking from the twin wall mug does not leave burnt lips. 4. You can hold these mugs without burning hands, unlike single walled stainless steel mugs. 5. The 400ml just fits under the basic Breville espresso machine. 6. Unlike ceramic mugs, these stainless steel twin wall mugs do not break if you drop them. We have used them out of doors while gardening, take them travelling long distance, short distance for picnics and what not. 7. Oh, and they do not have a metallic taste. 8. They are a stable design, so not likely to tip over. Thanks Equipoutdoors for stocking these mugs. Tricky to find a genuine stainless steel twin walled mug in New Zealand.

Had mine for about 4 yrs and its sort thing u only need to buy once because it will last a lifetime

What a wonderful product and package of extra items such as fire gloves etc. Great value and a superb product which we've used a couple of times now and are delighted with.

I've been looking for a long time for a good small camp oven but most are ridiculously priced. These are a quality casting that looks good and a very useful handle

So glad we found this. Had an old fashioned one years ago Alluminium but now have a bright shiny stainless steel one, Coffee fix daily in our caravan. Thanks