Oven safe (400ºF/204ºC) PanSaver Slow Cooker Liners are Used in Food Preparation, Cooking and Holding, to Prevent Food From "Baking-on" and "Burning-on" to the Slow Cookers. PanSaver Slow Cooker Liners are Convenient, Time Saving Kitchen Aids Which Will Improve the Food You Serve As Well As Reduce Your Costs. Grease Goes in the Trash Not Down the Drain. Save Money on Cleaning Chemicals and Hot Water, No More Soaking and Scrubbing. Clean Up is Quick and Easy. No Change in Food Cooking Time or Food Flavor. The PanSaver Slow Cooker Liners are Made in the USA and Safe for Direct Food Contact at Elevated Temperatures. 4 Liners per box