Latex pillows are made of the sap of rubber trees, and it is impossible to make latex pillows made of 100% pure latex. The latex content of latex pillows on the market is only 80%-97%. Because pure latex cannot achieve coagulation and fluffy effects, it needs to be artificially fermented with safe materials. Latex pillow has the characteristics of natural environmental protection, non-polluting, non-toxic, anti-allergic and so on. http://www.kxthome.com/pillow/latex-pillow/