sturdy ABS Exterior The sturdy ABS outer shells provides impacts resistance and extra durability, protecting the internal structure Great for frequent travelers or families with kids 304 Stainless Steel Inner pots Made with sturdy 304 stainless steel, the inner pots ensures food, rust resistance, and easy cleaning A sturdy and odors proof option for health concerned users Smart Temperature Control The built in smart temperature controlling systems maintains food warmth for extended periods, making it ideal for long commutes, travel, or outdoor activities Enjoy warm meals Fast Heating Technology Equipped with advanced heating technology, this lunch box quickly warms food to the ideal temperature, making it perfect for busy individuals who need a fast and meal during short breaks Portable & Heating This compact lunch box features a portable design with heating function, perfect for offices workers and students to enjoy hot meals without needing electricity Ideal for on the go use in offices or campuses