Body Sensor discount codes & offers

Body Sensor is a Marks and Spencer label for temperature-regulating bedding, not a separate company, and it is sold only by M&S. M&S uses the name on a mattress topper, mattress protectors, duvets from 1 to 10.5 tog, pillows, pillow protectors and a cotton fitted sheet, and says on the topper’s product page that the technology keeps you warm when it is cool and cool when it is warm. M&S does not explain how the technology works or publish any temperature measurements, and we found no independent test of the range.

The Body Sensor range at M&S

The details come from the M&S product pages for the 1 tog, 4.5 tog, 7.5 tog and 10.5 tog duvets, the mattress protector, the medium pillows and the fitted sheet. The 10.5 tog and 1 tog duvet pages both describe a hollowfibre filling and a fabric that draws moisture away from the skin. That is the only mechanism M&S names: a synthetic fill and a wicking cover, rather than a phase-change material with a stated heat capacity.

Price and buying terms

The topper costs from £69 in a single and is sold online only. M&S charges £3.99 for standard UK delivery, free on orders over £75, and returns are free with exclusions. There is no sleep trial and M&S states no guarantee period for the topper. It sits at number 10 in our best cooling mattress toppers comparison.

Who should buy Body Sensor

Body Sensor suits M&S shoppers who want UK-made, machine-washable synthetic bedding with a matching duvet and topper, and who are happy to judge the temperature claim for themselves. It is a weaker choice if you run hot and want evidence before you pay, since M&S publishes no measurements behind the temperature claim. A fibre topper also adds softness rather than support, so it will not fix a sagging mattress.