Borosilicate material: Made of high-quality borosilicate, these tapers are resistant to heat, temperature changes and durable. Set of 4 Units: With four different sizes (236 ml, 472 ml, 944 ml and 1652 ml), the set provides versatile options for storing a variety of foods. Tight fitting plastic lids keep food fresh and prevent spills, ensuring safe storage. Round and Compact Design: The round design makes stacking easy, maximizing storage space in your kitchen. BPA free Eco-Friendly: Borosilicate is a sustainable and recyclable material, offering an environmentally friendly option. Suitable for Microwave and Freezer: The versatility of these tuppers allows them to be safely used in microwaves and freezers, adapting to your daily needs.