What is the Ultra-Cool Pillow's loft? August 12, 2020 12:52 The loft of the Ultra-Cool Pillow (the height while it lays flat on your bed) is 6-8 inches. Related articles What is the Helix Ultra-Cool Pillow made of? Can I wash my Ultra-Cool Pad? Can I wash my Ultra-Cool Pillow? I wash my Adjustable Pillow? What size mattress can the Ultra-Cool pad fit?