Diatomaceous Earth is good in absorbing and releasing moisture, When Diatomaceous Earth grains are mixed with Polyurethane matrix @ 10-15 % and foam is made the bedding or sofa, furniture, upholstery can automatically adjust the indoor humidity in the air, adsorption and decomposition of harmful gas discharged during human sleep, eliminate odours, keep indoor air fresh, reduce the possibility of bacterial growth. This improves the human sleep quality and reduce fatigue.