Save your money. Not only are you saving the environment when you use our reusable filter, you're also saving tons of money in the process. Depending on how much coffee you consume, you could be saving hundreds or thousands of dollars each year. | Eco-friendly. When you choose to use our reusable and refillable filter in your illy, you're doing your part in saving our planet's landfills from even more plastic and aluminum | High quality material. Made of food grade PP plastic and stainless steel, safe to use | Easy to fill, easy to clean. Just fill them up with your favorite coffee! Not only that, but clean up quickly with warm, soapy water | Compatible with: ILLY Y1, Y1.1, Y5 Milk, Y5, X7.1, X8, X9.