Check out Avocado mattresses, a bit on the pricey side, but all organic. https://www.avocadogreenmattress.com/
Discussion
Also splurge on an organic pillow, the way my wife convinced me, wasshe pointed out you lay on it, breathing in for 6 to 8 hours every night, you don't want to breath in all that toxic shit they put in mattresses and pillows. Sold me. Good luck.