The Therm-A Sleep collection uses the latest fibre technology to ensure that you're able to keep cool and comfortable all night long. The Tencel Cool mattress and pillow protector is ultra-soft and silky to the touch for luxuriously comfortable sleep, the patented Miracle Membrane® is waterproof, yet air vapour porous, similar to human skin. It's also naturally heat-regulating, for the perfect sleeping temperature all year round. Comprised of all-natural Eucalyptus fibre, and manufactured without pesticides, it's especially helpful for people with sensitive skin or eczema. Made in a fitted-sheet style with four-way stretch to ensure a snug fit on any mattress depth. Fully machine-washable and suitable for tumble drying.