Collection Features: Serta iComfortPro, our most advanced mattress that features layers of premium latex foam in a 5-zone comfort system. The new iComfortPro features 5 support zones made from natural latex that retains its shape to promote better spinal alignment, while contouring to your body and providing even pressure relief. Why latex? Latex foam comes from rubber trees, making it naturally durable, non- toxic, breathable with contouring comfort and pressure relief where you need it most. Additionally, unlike synthetic foams, our latex foam doesn’t trap heat. Instead, it is naturally temperature regulating and breathable. Our quilted top features a cool- to-the-touch fabric designed to help you fall asleep more easily.