Ok I'm a little embarrassed to admit this but I spent almost $3,000 testing grounding products over the last 4 months. Mattress covers, sheets, mats, you name it. I bought 20 different ones because I kept seeing people online talk about how grounding helped their sleep and their joint pain, and I have both of those problems so I figured why not try it. Most of what I bought was honestly garbage. The mattress covers go UNDER your fitted sheet which means there's two layers of fabric between you and the conductive material (cotton is literally an insulator, it's designed to NOT conduct electricity, so what's even the point). The cheap Amazon sheets use silver that's sprayed on top instead of woven in, so after 5 or 6 washes the coating flakes off and you're basically sleeping on a polyester sheet that's shedding microplastics into your bed every night. Out of everything I tested, only one actually passed every test I threw at it. It's called GroundingWell. Real silver woven directly into organic cotton, half sheet that lays on top of your existing bedding so you get direct skin contact all night, plugs into the grounding port on your wall outlet. First night I slept 9 hours straight. After a week the deep ache in my knees and hands that I'd been living with for years had dropped significantly. I'm playing tennis again. I already ordered 4 more sets for my kids' beds. They're running up to 67% off right now and there's a 90 day money back guarantee so there's really no risk. I placed the link below - just a heads up they sell out constantly and last restock took months. ๐ https://www.groundingwell.com/products/groundingwell-bedsheet