https://brutkasten.com/neuro-socks/
this company also makes
https://neuro-socks.com/produkt/vaxhaptic-pflaster/
These products including powerinsole are marketed by a local tv station and program https://www.puls4.com/2-minuten-2-millionen/staffel-8 which pretends to be a startup investment show but is really just an infomercial for woo products.