smiling planet's plates and bowls are made from safe, 100% recycled, 100% recyclable, medical-grade, high purity, number #5 polypropylene. the products are CPSIA-compliant, use non-toxic inks, and are free of BPA, phthalates, PVC, and lead. Number #5 polypropylene is regarded as a safe plastic by such leading authorities as Healthy Child Healthy World. dishwasher safe. we do not recommend microwaving. all our dinnerware is made outside of san francisco, california.