VITALFOAM 4 lb Denisty Viscoelastic Memory Foam Orthopedic Contour Neck Pillow - Thick Revolutionary breakthrough in foam technology. The visco-elastic foam shapes itself to your head and neck. VitalFoam Viscoelastic Memory Foam provides superior pressure point relief. Provides proper neck support & alignment for optimum comfort and a better nights sleep. Anti-Microbial Foam--Meets CAL-Specs. Hypoallergenic, CFC and formaldehyde Free. INCLUDES a plush zippered terry cloth cover.