Oven Safe-Our cupcakes liners can withstand high temperatures up to 220℃/428℉ in the oven. Put them into the oven and bake directly,no baking tray,pans,bakeware needed. Seal to perfection-Clear lids seals tightly to the cup,keep food fresh and clean,also facilitate you to carry the cupcakes out with no need of cupcake boxes.