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? How long can I keep my Helix Mattress in the box? What is the Down & Feather Pillow's loft? Should I ever rotate my Helix Mattress? Why are the foundations an inch shorter than the mattresses?