The ZONED GEL DOUGH BLENDS three technologies come together to make a comfortable, supportive pillow. It starts with DOUGH memory foam, a supple memory foam formula that compresses evenly beneath weight and hugs body curves for personalized comfort. This memory foam is infused with gel material that helps to distribute heat to prevent heat buildup. The pillow has a ZONED TECHNOLOGY design, with larger holes in the middle to cradle the head and smaller holes around the perimeter to support the neck. This design also improves airflow through the pillow for more breathability. This pillow is completed with a Tencel removable cover known for its moisture-management and temperature-regulation properties that create an optimal sleep environment. Fill: 100 percent polyurethane gel foam.