Amid the jokes, my friend does say she’s rarely seen a product that seems so absolutely designed with me in mind.

"Lain lengthwise under the duvet, it heats up the whole bed, rather than a single spot. Toasty! But the real genius is in the strap, which you tie round your waist – or neck or back – so the bottle stays put and spreads the heat like a hug."

This is due to the bobbly rubber, which insulates for up to six hours, apparently.

Image via Huffpost

Whatever, it works. At least at home and in the office – I’m not sure I’d wear it on public transport (as the website suggests I can) because it’s still a bit bulky for the commute. Time to make a ‘Bottle on Board’ badge, anyone?

Image via Huffpost

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