Talalay Latex is vital in that it provided that cradling support you need in each Birch Pillow. We use only 100% natural Talalay latex sustainably sourced from the tropical rubber tree Hevea Brasiliensis, which is native to Southeast Asia, Africa, and Brazil. All of the latex in Birch products is eco-INSTITUT certified to ensure safety. Additionally, we source exclusively from closely-monitored, certified plantations.