THERMOS's Shuttle Chef is a thermal cooker with a stainless steel inner pot, characterized by its green design. - Brand: THERMOS - Model Name: Shuttle Chef 4.5L - Color: Green - Material: Stainless steel inner pot - Feature: Thermal cooking function Thank you for looking. I only used it once to make yogurt, and it is clean. The instruction manual and recipe book were stored elsewhere, so they are a bit dirty. As this is a used item, please refrain from purchasing if you are sensitive. Thank you.