Made from rapidly renewable, unbleached bamboo paper. No trees are used to make NoTree cups. Bio-lining made from plants creates a moisture barrier. Disposable, freezer safe, and contain no wax or plastic lining. Great for all cold beverages, but can also hold liquids up to 220F. 100% compostable in two to four months in a commercial composting facility. Not microwavable. Made from rapidly renewable, unbleached bamboo paper. No trees are used to make NoTree cups. Bio-lining made from plants creates a moisture barrier. Disposable, freezer safe, and contain no wax or plastic lining. Great for all cold beverages, but can also hold liquids up to 220F. 100% compostable in two to four months in a commercial composting facility. Not microwavable.