Latex Foam Rubber Products Ltd. - The UltraFirm mattress redefines support and comfort. Make this choice if you need an extra feel of firmness to hold you down after a hard day.
Latex vs. Memory Foam | Sleepopolis
Amazon.com: Pure Green Natural Latex Mattress Topper - Firm - 2 Inch - Twin XL Size (GOLS Certified Organic) : Home & Kitchen