EcoSouLife Bamboo - BioSip Cup 12 Oz, Lime This travel coffee mug is disposable yet can hold up to years of regular use while still being more environmentally friendly than their plastic alternatives. Made from bamboo, this cup is biodegradable when buried but will not disintegrate in cabinet and will last for years! Fridge and freezer safe. Do not use in the microwave. Holds 12 ounces