100% food safe silicone, suitable for oven, microwave, freezer and dishwasher safe,temperature range: -40F TO +464F. silicone lunch box1) 100% food safe silicone2) temperature range: -40F TO +464F.3) suitable for tranditional oven, microwave, freezer and dishwasher safe.4) non-stick, flexible and easy clean.5) any color avaible.