Durable stainless steel construction with excellent heat retention2 microwaveable inner bowls: Main Bowl 10 oz. / Side Bowl 11 oz.Washable nonstick coated outer container , Heat Retention After 6 Hours - 127°F , Cold Retention After 6 Hours -52°FIncludes chopsticks, chopsticks holder and easy to carry tote bagMade of BPA-free plastic and stainless steel