Subpod is made from Polypropylene (P.P.) which is a type of plastic. As an eco-conscious company this might seem like an odd choice, but it’s the most sustainable option available right now. We experimented with steel and bioplastic Subpod prototypes, but they all deteriorated way too quickly. It would have been unethical to sell a product with only a 1 - 2 year lifespan, and bad for the planet to constantly ship new replacements. We strongly oppose toxic & single use plastics – which is why we chose Polypropylene. It’s durable, capable of withstanding a wide range of temperatures, naturally BPA free and food + water safe. If you look up your fridge’s materials, it’s likely that P.P. is helping to keep your veggies cool! We’re very excited for the future of bioplastics and other biomaterials, and we can’t wait until there’s an even more sustainable option for us to make Subpod with.