Use to serve and deliver hot and cold meals. Pair with compatible lid for a leak-resistant, stackable and stylish way to deliver food. Great for deli, bakery, produce and restaurants. Crack-resistant and microwaveable, they're designed for customer satisfaction. Freezable. Square bowls made of polypropylene material. Non-vented lids made of PET material, vented lids made of polypropylene. Top rack dishwasher safe; reusable.