Made from medical-grade, gamma sterilized polystyrene Ventilation ribs on the lid allow for air circulation Manufactured in a state-of-the-art cleanroom facility Packaging features a UPS™ shippable outer carton to prevent damage Product sleeve is made from a strong polymer to prevent bag holes Dishes packed in easy-open product sleeve with tear notch Product sleeves are vacuum sealed to prevent scuffing and other damage to dishes Note: Cat