Memory foam infused with activated charcoal, or ebonite memory foam, provides the benefits of traditional memory foam, such as pressure relief and conformance. But it also has more! When charcoal is infused, it forms a finer, more open-cell memory foam, providing a velvety feel and higher airflow, which means it is cooler. Activated charcoal also provides superior thermal absorption. The combination of higher airflow and heat absorption provides better overall temperature management. Charcoal is also a natural odor and bacteria eliminator. Simply put, activated charcoal keeps your mattress clean and fresh. It allows for greatly increased airflow and has excellent cooling benefits. Our bed is covered in a wonderfully soft, almost like a sweatshirt, heathered gray knit fabric. The stretchy knit enables you to feel the full effect of the activated charcoal. And it looks pretty cool too!