It is 400ml silicone lunch box, made of the same platinum-cured food grade silicone rubber as the baby's nipple. It is tasteless, safe and environmentally friendly, and meets the German and US food contact standards (LFGB & FDA). The silica gel is resistant to high and low temperatures and has a temperature range of -20 ° C to +120 ° C. Other sizes can be provided. 600ml/700ml/1350ml. Custom logo is available.