6D Curve Wing Memory Foam Pillow (Cool x Tech) White Colour Ergonomic Cervical Support Pillow Neck Pain Relief The high-curve end is 135mm thick, perfect for side sleepers. Meanwhile, the low-curve end is 85mm thick and better for back sleepers to maintain proper spine alignment versatile dual thickness allows you to adjust for a higher or lower head and neck support according to your preference Washable pillowcase in Cool-Tech organic fabric that feels good against the skin coexistence of breathability, smoothness and cushioning It is zippered and removable so it is always washable and hygienic. It is also antibacterial and deodorant and can be easily cleaned in a washing machine.