Height of these "Tortaflex" hemisphere molds (as the company calls them) is half their diameter. Volume is 13.8 ounces (409 ml) These different silicone hemisphere molds can be used in tandem by first molding an ice cream half-sphere in the smallest mold, then placing that frozen half-sphere into ice cream made in the next-size mold, and so on, until you have a hemispherical ice cream mound with several layers. Flexible silicone mold resistant to cold down to -76F (-60C) and heat up to 446F (230C), letting you bake a cake or make ice cream and get it out easily thanks to the non-stick property and flexibility of the mold. The mold's integral frame makes it stable, and its suppleness lets you push your baked or frozen product out from the bottom.