Wheat Straw Containers. It is one kind of 100% eco-friendly biodegradable material. The raw materials come from the stalk that left over after wheat grains are harvested.Traditionally, it has been treated as waste. But now, we reclaim this material and use it to make our biodegradable wheat straw products,like wheat straw bottles and wheat straw jars. They are very safe to use in cosmetic and food market.