◾️ Tupperware Rainbow Cooker 7-layer construction 21cm stockpot The outer box (cardboard) is generally dirty, but the product itself is new and unused. The product has never been taken out of the plastic. [Product Description] The Rainbow Cooker is a 7-layer construction pot. It boasts excellent heat efficiency due to the synergistic effect of stainless steel, which has good heat retention, and aluminum, which has excellent thermal conductivity. In addition, the water seal effect, where evaporated water accumulates between the lid and the pot body to create a film, minimizes water evaporation and allows you to boil and simmer with less water than a regular pot, utilizing the moisture of the ingredients, thus minimizing the loss of nutrients from the ingredients.