100% Hcs Fiber Filling 150gr/m2 (420 gr) Outlast® Wellington Fabric, Cotton Fabric The Clima Max Non-Sweat Mattress Protector is made with specially developed thermo-capsule Wellington fabric using Outlast® technology developed for NASA. Outlast® technology is a proactive technology that adapts to your personal situation. When it warms up, the thermo capsules in the fabric absorb heat and cool the environment. When the environment cools down, it releases the heat. It functions like an air conditioner during sleep, keeping your body temperature balanced. With its 30 cm high fitted lycra skirt, it fully covers even the tallest mattresses. WASHING INSTRUCTIONS: Can be washed at 30°C. Bleach should not be used. Can be tumble dried. Do not iron. Dry cleaning is possible.