I bought a GOOD set of Silver thread sheets. AMAZING. The first night slept right through the night! and almost ever since TOO! I just drift off to a continuous night sleep. There is silver threads and carbon. I bought "Terraluxe" (maybe Terralux) brand. It grounds but does not use electricity. BUY A GOOD ONE was what I read. If you buy thru amazon you can return. Now, I can't wait to climb into bed! I think my dog likes them too! I don't have time to answer questions right now, so please research on your own. I've always used silver antibiotics, grounding and such. So I thought "why not try it." LOVE.