L: Latex Natural Rubber (NR)~ 100% Natural Rubber (NR) Latex is harvested sustainably by tapping the sap of Hevea Brasiliensis rubber trees grown in tropical climates. It is processed into a “foam” using one of the 2 methods Talalay & Dunlop

• The white milky liquid/sap is harvested when the bark of the tree is incised, a milky liquid exudes and is subsequently whipped to a froth (Dunlop process) or expanded through vacuum applications (Talalay process) and further vulcanized. Vulcanization of the rubber retains the rubber's elasticity under temperature changes. This process heats rubber exposing it to sulfur, which causes cross-linking, decreasing rubber's tackiness and sensitivity to heat and cold" Read more about both processes in this article by Matt To Go here.
• NR has molecular inconsistencies that makes it more difficult to work with and makes the 100% natural Latex foam rubber less durable then SBR or NR/SBR blends
• 100% natural Latex formulation offers less precise control over the firmness range of Latex foam rubber

It is durable, naturally anti-microbial, mildew proof, dust mite resistant, breathable and has an open-cell structure.