This sheet set is made of 100% rayon from bamboo, not only to feel soft and comfortable but also can keep you cool while you sleep on it. There will be no allergic reaction due to the materials used in this sheet set being natural and environmentally friendly, so use it with confidence. Moreover, rayon from bamboo material has a good humidity control effect, absorbing excess body heat to achieve a constant temperature effect. Our sheets set have many sizes and three different colors, so you can choose one that can accord with your preference.