Shoulder Gel Dough + Z Gel - PillowGel infused Dough memory foam cradles the head and neck to relieve pressure, while an ample layer of liquid Z Gel captures and distributes heat for a comfortable sleep temperature. We combined our best cooling technologies with a unique shoulder recess that offers superb neck support for side sleepers. A removable 100% Tencel fiber cover adds softness and moisture wicking comfort. Product Features Shoulder Gel Dough + Z Gel Gel infused Dough memory