Our Preserved Moss is made of 100% natural materials that are ecologically preserved to last for 5 years or more. Using Preserved Moss is a great way to bring greenery inside without the need to have water or light; it's basically maintenance-free. Preserved Moss is known not only for its aesthetic benefits but also for aiding with sound absorption, lowering carbon dioxide, reducing airborne dust, and providing the sense of calm-lowering stress levels in indoor spaces.