This square soap design makes lovely full-sized soaps! The "Basic Square " shape is large enough to embed smaller shapes or toys inside, or it can be used to make pretty, colorful soaps to fit with any decorating style. Whether used for your own bathroom, or as a gift, this soap is sure to be a hit! About Silicone:Heat-resistant temperature of -40 Degrees Celsius to +230 Degrees Celsius, can be re-used, innovative design, soft, varied styles, stripping easy, and easy to clean. Advantages:Silicone is extremely stable properties, UV, ozone, extreme temperatures, and the vast majority of chemical agents can not change its character. it can be applied to microwave heating, oven baked, non-direct contact with flame cooking, cold storage and freezing..