1. Healthier Choice One of the most significant advantages of glass lunch containers is their non-toxic composition. Unlike plastic, which can leach harmful chemicals into food when heated, glass is entirely safe for storing food. It is free from BPA, phthalates, and other harmful substances, making it an excellent choice for health-conscious individuals. You can confidently store a variety of foods, including fruits, vegetables, grains, and leftovers, without worrying about potential health risks.