These molds are made of a non-stick food grade silicone. They are temperature resistant from -40°F to 500°F. Each sheet is 11 7/8" long by 6 7/8" wide. They are reusable up to 3,000 times.
Makes 6 Hemispheres - Dia. Of Hem. Are 2 3/4" x 1 3/8"