This reusable cup is made from natural rice husk, 100% recycled material. Containing no melamine or BPA, rice husk is a waste product from rice farming. When you are ready to dispose of this cup, soak it in water overnight, crush and bury it in compost or soil. It will start to biodegrade in soil within six months. Dishwasher safe. Other deisgns available - please see other listings