Product information:

Material: aluminum foil
Color: small 20×13cm [10 bags], medium 23×17cm [10 bags], large 26×29cm [10 bags], small 20×13cm [10 boxes], medium 23×17cm [10 boxes] and large 26×29cm [10 boxes].
Is the microwave oven available? No.
Fresh-keeping bag category: removable
Heat resistance temperature:-60℃-100℃