The fish mold is made from sturdy plastic and kept in a clear plastic bag. Mold size: 12" ( length) X 8.5" ( width). Medium fish size: 9"(length) X 4.3" ( width ) X 2.8" ( depth). Small fish size: 6.5" (length) x 2.8" ( width) x 1.6" ( depth). The mold can be used for making desserts, chocolates, soaps and other DIY projects. It works great with concrete. Quality guaranteed.