What a right ripper! This is the latest in WOO-WOO. For a bit over 100 quid you get a cotton bed sheet full of fine wires and a mains lead with molded 3 pin plug that connects to the Mains Earth !!!! Their blerb reads: "Many are unaware that the Earth’s surface is covered by a blanket of electrons, which may act as one of nature’s most powerful antioxidants and anti-inflammatories. Every time we come into contact with the Earth’s surface, we are able to absorb these electrons through our skin through a process called grounding, or Earthing. Grounding during sleep provides the body with multiple hours of these free electrons, at a time where the body undergoes the most healing and regeneration"... There's even a couple of Woo-Woo as hell videos....
and
The latter features a dodgy DMM! I'm impressed with the posh webpage though...
https://rowlandearthing.co.uk/