Traditional disposable coffee cups are lined with petroleum based plastic linings. Not only does this make them not compostable, it can also leach into the hot beverage. Our biodegradable coffee cups are lined with Ingeo, a plastic made entirely from plant starch. They can withstand temperatures up to 200 degrees Farenheit. These compostable coffee cups are also certified by the Biodegradable Products Institute. Also check out our custom printed cups.