Easy to clean as it is dishwasher-friendly | packaging: 6pcs/brown box
100% food-grade premium glass that is Lead and Cadmium free, Microwave and Dishwasher safe, Lab tested for heat exposure (60 degrees Celcius for 24 hours) and thermal shock (Freezer for 24 hours to Oven at 177 degrees Celcius), Lab tested to withstand temperatures for 24 hours at -17 degree Celcius and then 24 hours at 49 degrees Celcius with no structural failure or visual change