Meghan Markle has sent a "clear message" after the creators of a $4 stress wrist patch turned her sighting into an online advert, an expert has claimed.
Brand and culture expert Nick Ede believes the latest pictures of the Duchess wearing the stress patch walking in Montecito over the weekend were no accident.
While Prince Harry is away in Asia, Meghan was seen a £1,200 Max Mara wool coat despite temperatures hitting 73F (22.7C).
But royal fans noticed her left cuff was turned up and a mysterious blue sticker on her arm.
Brand and culture expert Nick Ede believes the latest pictures of the Duchess wearing the stress patch walking in Montecito over the weekend were no accident
The patch was later confirmed as a NuCalm Biosignal Processing Disc, by the company itself.
On its official Instagram page, the business shared pictures of Meghan wearing the patch.
Offering a free trial, a discount code and promoting an app costing up to $49-a-month, NuCalm captioned the photo: "The Duchess wore a disc, which activates the parasympathetic nervous system."
Expert Ede said the outing is another sign that her lifestyle blog The Tig may soon return.
"Meghan's strategic placement of a stress pack from a relatively new start-up company who reposted the image of her in their own social media is a clear message that she is looking to build her lifestyle brand and create a platform for her followers to benefit from her experiences and the products that help her," he told the Daily Mail.
"The image was a clear message to say she's stressed but she's using a patch to help her. Her brand is very strong so I think that this is a good way to go, with partnerships."
According to brand the circular patch is meant to reduce stress hormones and improve sleep.
Each daily "biosignal processing disc" by NuCalm costs £3.15 which, if worn every day, would cost around £1,150 a year.
Expert Ede said the outing is another sign that her lifestyle blog The Tig may soon return
Guy Leschziner, Professor of Neurology and Sleep Medicine at King's College London, said: "It doesn't look like they've actually proven anything. They may well prove us all wrong, but the burden of proof is on them."
The patches send a signal to the heart, slowing down cellular actions to mimic the “body’s normal transition to a peaceful, restorative night’s sleep”.
Users of the patch are instructed to wear only on their left wrist and to place it three-finger lengths away from the wrist.