Cups made of biodegradable and compostable eco-friendly bamboo fiber and bamboo from certified sustainable sources. Setsuko exterior design. Provided with food safety certificates from Japan, LFGB (European) and FDA (USA). Lid and cup free of BPA (bisphenol A) and phthalate. With a practical "Anti-Drip" lid made of rigid, food grade silicone. Prevents leaks and liquid spillage. The central band is made of a heavier, thicker silicone offering excellent heat resistance. Dishwasher safe (without the lid and silicone band). Not recommended for microwave use. 100% recyclable.