Reuse reduces daily consumer waste and helps our planet. This mug is made from PLA, which is a completely biodegradable and renewable material. It looks like plastic but actually contains NO fossil-based plastic at all. The sleeve is made of food-grade silicone that can be recycled. The lid is made of PLA and it screws into the cup, so you don't have to worry about spilling your coffee anymore. The capacity of the cup is 450 ml. The packaging is made from a cardboard box.