1. And perhaps most importantly, just because it's labeled "natural latex" does not mean they have not slipped in man made chemical . Make the seller prove it.
2. Dunlop or Talalay. There is a difference. Either can have it's advantages.
- Dunlop latex: This is the original natural latex production process that involves stirring, molding, and baking the tree sap. It is firmer along the bottom and softer toward the top.
- Talalay latex: This is a newer natural latex production process that involves pouring the foam in a vacuum-sealed chamber. It has a more consistent feel and is more breathable than Dunlop latex.
- Synthetic latex: This is a cheaper latex option that is not natural. It is made from petroleum-based chemicals and may have lower durability and quality.