Speedy Delivery! Transport your precious caffeinated cargo in Fred's SIPPING CONTAINER, molded from renewable, durable bamboo fiber and protected by a comfortable, heat-resistant silicone "bubble wrap" sleeve and lid. Carry on! This biodegradable travel cup is a green composite consisting of 35% bamboo fiber, 30% cornstarch, 5% wood pulp, and 30% melamine resin. Twelve ounce capacity.