Glass, by its nature, is a durable material that can withstand temperature changes, making it ideal for both the refrigerator and the microwave. Unlike plastic containers, glass does not retain odors or stains, and it does not leach harmful chemicals into food — a significant advantage for health-conscious consumers. Furthermore, 2 cup glass containers often come with airtight lids, which help to keep food fresh for longer periods. This is particularly important for meal prep, as freshness preserves taste and nutritional value.