Wooridul Cloud Mattresses use 3-Demensional mesh fabric materials for better air ventilation(to promote a pleasant, refreshing sleeping environment) and more cushions. Many typical mattresses have the stiffness that deters the users from having a good night of sleep. However, wooridul cloud mattresses are free from stiffness as such with the use of the cutting edge 3-dimensional mesh fabric materials. Experience a nice"float" with the wooridul Cloud Mattresses!