Originally Posted by PeteHski

It's not a new concept and I'm not aware of any commercial links.

I came across this idea myself a couple of years ago, but don't actively do it. The science is pretty thin on the ground, but there is some evidence that grounding promotes a healthier cardiovascular system i.e. lower blood pressure, reduced inflammation, improved blood flow, less clotting etc. There are also few more potential subjective benefits relating to mood/depression/anxiety/sleep quality etc. What little science there is tends to be fairly positive toward the potential benefits. I'm not surprised to find pro cycling teams doing it for potential marginal gains.

Here are some quotes from the research:-

"In a small study on grounding and heart health, 10 healthy participants were grounded using patches on the palms of their hands and soles of their feet.
Blood measurements were taken before and after grounding to determine any changes in red blood cell fluidity, which plays a role in heart health. The results indicated significantly less red blood cell clumping after grounding, which suggests benefits for cardiovascular health."

"Another slightly larger study examined the role of grounding on post-exercise muscle damage. Researchers used both grounding patches and mats and measured creatine kinase, white blood cell count, and pain levels before and after grounding.
Blood work indicated that grounding reduced muscle damage and pain in participants. This suggests that grounding may influence healing abilities."

So you can see why pro cyclists might take note.