capacity :1500ML insulated lunch container keep Warm&Cold for 4~6 hours Bento Lunch Box,Thermal Container Material:Food Grade PP, Stainless Steel, ... stainless inner tank and Glass tankYes for PP inner tank.insulated lunch container, About package,we can produce as customers' request..We ... side, it's not just about enjoying the comforts of home wherever you go, it's also about preserving personal choice ...