1) Heat resistant, oven and microwave use 2) glass material, safe and easy clean 3) airtight 4 ... 7. Sharp down temperature tolerance: heat for 10 min. and use temperate water with sharp down termperature at 130 degree, no ... at 200degree, no break or fissure.9. Shock Tolerance: use 50g steel ball at height 300mm, throw on the product ... Set of 3 Microwave Round Glass Food Container (GC-YBXH 002/003/004)