Eco-friendly 350ml, single walled reusable bamboo coffee cup, it is made from a blend of natural organic bamboo fiber and Polypropylene. Renewable and biodegradable. The use of disposable plastic cups is no longer recommended as it pollutes the environment. This cup is strong, durable and anti-bacteria, it is BPA and phthalate free. This product is dishwasher safe but microwave is not recommended.