If you care jumbo baking cups 24sif you care jumbo baking cups are a favorite in the kitchen they are made from fsc certified unbleached totally chlorine free greaseproof paper ndash yet they have exceptional non stick properties perfect for extra large muffins and cupcakes microwave safe and oven safe up to 428 f220 c if you care jumbo baking cups are certified compostable for homebackyard and industrialmunicipal composting they measure 3 inches 889 cm