Can I wash my Ultra-Cool Pad? August 11, 2020 20:16 Yes! You can machine wash cold on the gentle cycle. Tumble dry low. Do not bleach. Related articles What size mattress can the Ultra-Cool pad fit? What is different about the Helix Plus mattress? Can I use the Mattress Protector with the Ultra-Cool Pad? What are the Helix Sheets made of? Why are the foundations an inch shorter than the mattresses?