Just before Christmas, I grabbed myself a full set of Marks and Spencer thermals to see how warm they would keep me - and how long before I'd need to slap the heating on. This was in response to shoppers raving about how warm and snuggly M&S's Heatgen thermals are, with some claiming they "don't need the heating on" when they wear them.
I admit I was pretty impressed with the Thermal Heatgen™ Plus items myself - and it was indeed several hours before I got cold enough to put the heating on in my home as I reported in my original feature.
But sadly some of our readers thought I was being a bit extravagant splashing out at M&S for my thermals. The Thermal Heatgen™ Plus top and leggings that I raved about weigh in at £16 each in M&S stores and online.
