2012 RedDot Design Award Winner 6.3" (16cm) Stockpot & 7" (18cm) Stockpot & 7.8" (20cm) Low Stockpot Rivetless Handles: Seamlessly integrated for easy， thorough cleaning. Ecolon Ceramic Coating Superior nonstick performance without PFOA/PTFE. Cast Aluminum & Patented Steam Vent Hidden under lid prevents overflow. ? Before initial use， hand wash with hot， soapy water. ? Aluminum cookware require very little preheating， do not over heat . ? It is best not to use metal utensils.