Size :base 50mm (2 inch) height 30mm(1.25inch) expanded diameter 115mm (4.5 inch) 25pcs/stack 100pcs=4stacksMaterial: 40g foil paper/greaseproof paper, food grade paper, safe and odorless; grease resistant liners inside, high temperature resistantMethods of use: take the cups one by one from the bottom of nesting cups to prevent any deformation,put the cups on the baking mould and pour the finely mixed cake ingredients into the cups ensuring the amount of cake liquid less than 70% of cup capacity,bake 15 minutes at 350 ℉Cautions: no direct exposure to fire and not suitable for cooking; no water or oils are allowed in the cup mould; the highest baking temperature should be not more than 250 degrees Celsius and the baking time should not be too long to avoid damage to the cups and food.Storage conditions: room temperate,no expousre to direct sunlight easy to take apart, hold up well in the oven easy to use,quick and elegant to dress up your cupcakes and muffins. pls kindly notice the greasepoof paper is printed with Food grade Japanese Edible Soy Ink ,slight smell cant be avoid. especially solid paper cups need more soy ink ,IF you care ,pls dont buy ,thanks or you can wait it to fade away. we guarantee its food grade.