Compostable (All components are made of plant-based material certified compostable in industrial composting facilities. Check locally, as these facilities may not be available in your area. No current certification for backyard composting). Dishwasher safe. Compostable in Industrial Facilities: Check locally, as these do not exist in many communities. Not suitable for backyard composting. BPA free. At open Nature, we believe products should be simple-quality products that are carefully crafted using thoughtfully chosen materials you can trust. 100% guaranteed quality & satisfaction or your money back. Made in China.