Made of glass, this storage box set is a chemical-free solution for cooked or fresh food or leftovers. Unlike plastic, glass does not contain estrogen-mimicking chemicals like BPA and Lead and does not react with the food inside. The lid is made from food-grade plastic.
Capacity 390 ml, 630 ml, 880 ml
Features  Airtight, scratch-resistant, odour-free, dishwasher-safe, freezer-safe, microwave & oven-safe (without lid)
Free from Bisphenol A (BPA), Lead and other toxic chemicals; acid & alkali resistant
Made in France

Glass is one of the most environment-friendly materials. Not only can it be reused, it can also be recycled infinitely. It has a long life unless broken. However, it does not biodegrade if dumped in a landfill or in a water bottle. 
Disposal 
When disposing of a glass product, one should pass it on to a recycler or a scrap vendor or add it to segregated waste. Every 1,000 kgs of waste glass recycled into new items saves 315 kgs of carbon dioxide from being released into the atmosphere during the creation of new glass
Luminarc on Sustainability
Luminarc is a brand part of the Arc International group, headquartered in France. They follow European standards for waste reduction, materials safety and design to ensure there is minimal impact on the environment and no harm to human health. They have a variety of certifications for their sustainable processes.