... molds 1) 100% silicone 2) Endure -40C to 260C 3) non-toxic,non-stick 4)FDA,SGS approve 2 cavities rectangle shaped silicone ... of its physical characteristic,100% silicone,heat-resisting,cold-resisting.2)Function :Be used for making soap for different shape3)Size ... refrigerator,freezer,microwave,and oven.8)Heat resistant up to 230F and down to -40F 9)Flexible.easy storage and easy release ...