1) Made of food grade silicone rubber approved by FDA and LFGB of silicone baking tray. 

2) Flexible: easy to remove baked foods, and can be folded for saving storage space.

3) Impermeable: doesn't retain stains, odors or flavors.

4) Heat and cold resistant: used in microwave, or freezer, from -40 to 250 C.

5) Easy to clean: just rinse and wipe.

6)Never go out of shape,highly welcomed OEM odm designs