The leak-resistant, single-sided polylactic acid paper (SSPLA) lining can withstand temperatures up to 205 degrees Fahrenheit and ensures that the cup won\'t weaken from holding hot liquids over time, making it perfect for piping-hot coffees, teas, and lattes. Featuring a tightly rolled rim and plant-based lining, this cup provides worry-free, leak-proof drinking and creates a tight and secure seal when used with a compatible drinking lid (sold separately).