Can I wash my Ultra-Cool Pillow? August 12, 2020 12:56 The cover of your Ultra-Cool pillow should be spot cleaned only and left to air dry. Do not machine wash. Related articles What is the Ultra-Cool Pillow's loft? Can I wash my Adjustable Pillow? Should I ever rotate my Helix Mattress? What is the Helix Ultra-Cool Pillow made of? How are the GlacioTex Waterproof Mattress Protector and GlacioTex Cooling Cover different?