Sourcenode · 81w Has anyone here done a bunch of research on mattresses? I am buying a new one and want something comfortable that's low toxicity. Medium firm probably. I know one of you geniuses has looked into thi... Brisket @Brisket 1723067590 I dunno about mattresses. I have a very firm latex mattress & I'm happy with it still.I did just order an earthing undersheet with stainless steel woven into it. I imagine that being electrically connected to the earth while sleeping is beneficial. 2