Food-grade (FDA standard) Silicone. Select 2 or more quantity to see what happened for shippping fee from Allforhome? * Heat Resistant Temperature -40 to +230 Centigrade (-40 to 446 F) * Finished Size(cm): 7.5*2.5*3.0, Finished soap weight: about 80g each * Good quality and easy to use and clean * Dishwasher-, refrigerator-, freezer- and microwave-safe