1.[Safe Use]: Food grade silicone. FDA approved, excluding BPA. High quality, environmentally friendly, withstands a temperature range of -58°F (-50°C) to 392°F (200°C). It is suitable for MICROWAVE and FRIDGE.
2.[Insulation]: Heat resistant cover and lid can be easily opened and closed.
3.[Durability]: 10000+ folding life, dishwasher and microwave safe.