Bamblu offers you only eco-friendly and compostable bowls in bagasse, tapioca starch, or palm leaf. Exactly what they are made of is provided on the product's page and in Product Specs.
Many other companies that sell SOME compostable products lead you to believe, by default, that ALL of their products are eco-friendly. If they are not giving you details, there is a reason. Be sure before you buy.
Looking for product for your catering or restaurant business? Call Vangie at 707-824-1809 to buy in bulk at further discounted prices.