The Japanese Heatgen™ technology fabric is said to "lock in" warmth when you wear it, and it features a "brushed" material on the inside which is said to "keep you extra warm when the weather gets chilly".

This may affect nutrition and allergen information therefore you should always check product labels and not rely solely on the information presented here. When temperatures dropped this month, many households were racking their brains for ways to keep warm while keeping the heating off as energy bills skyrocketed.

If you’re looking for an extra way to keep warm this winter, especially on your morning commute to work - head down to your local Marks and Spencer, and check out the Heatgen thermal range! It may not be reproduced in any way whatsoever without Ocado Limited's prior consent, nor without due acknowledgement.

Every product featured in The Strategist is rigorously selected by our (obsessive and unbiased) editors. I needed something sustainable that would last for the next few months at home as I waited for the frost to thaw. Experts, like Martin Lewis on his MSE site, have suggested "heat the human, not the home" as a way to try and keep costs down while keeping warm. With the soaring cost of energy continuing to worry householders, many are also trying to think of alternatives to having the heating pumping out throughout the day. One such way to avoid using the heating is to layer up, with Martin Lewis suggesting "heat the human, not the home" as a way to keep costs down while keeping warm.You should also note that the picture images show only our serving suggestions of how to prepare your food - all table accessories and additional items and/or ingredients pictured with the product you are purchasing are not included. These were like a normal comfy legging, but with a soft brushed inside which kept me super warm and cosy throughout the day. If you have a non-BNPL balance, you will still need to make at least your minimum payment as shown on your statement.