This luxurious high-density visco-elastic memory foam pillow has been infused with cooling blue gel microbeads. The addition of gel microbeads to memory foam creates a more breathable foam, helping to regulate your body temperature while you sleep. Covered in Coolmax fabric for extra softness and comfort. This pillow shapes itself to your head and neck, providing proper neck support and alignment for optimal comfort and better sleep. The Heavy Classic is a more dense, firmer version of our Light Classic pillow.