Cetomo food storage containers are made from durable, high-quality polypropylene (PP) plastic, ensuring they resist cracking and breaking, even in low temperatures. The user-friendly lid features a quick open tab for effortless opening. These containers are freezer safe, microwave safe for convenient reheating, and dishwasher safe. The lid also has a subtle raised pattern for an anti-slip feature when stacked, providing stability. Ideal for organizing refrigerators, pantries, and lunches.