New 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. Size cup can be stacked and save space, they're dishwasher, microwave, fridge, and freezer safe. Our premium quality cups are very light to hold. Different from the glass cup easy to break, Our unbreakable wheat cups are made with durable and light material that protects the cup when dropped, no worry that it may break once falling. Excellent for drink, juice, tea, soda, water, and milk - home or picnic. Price includes to CA. Quantity over 10000 is by sea.