Eco-FriendlyNew Biodegradable Material, which will self decompose in the soil.Made from renewable and reclaimed materials, natural wheat straw + starch+ food-grade PP. No Heavy Metal,BPA Free. Save Space Size cup can be stacked and save space, they're dishwasher, microwave, fridge and freezer safe. PACKAGE Healthy Cups set of 5)18.6 OZ/ 550ml., Designed on both esthetics and comfort, Excellent Color will not run or fade Lightweight & UnbreakableBreak and chip resistance for carefree durability, with smooth rim, suitable for for coffee , tea, water, milk, Juice, soda and more. It also can be a gargle cup toothbrush holder bathroom cups. NOTICEWhen you put water into the mug, you can smell the wheat flavor,but don't worry, it's healthy and no damage to body.