HOW TO MOLD YOUR MOUTHPIECE
Step 1: Put the mouthpiece in your mouth (Up side facing up), trim off excess material on the tip or wall until the mouthpiece doesn't hit the gingiva.
Step 2: Heat the water to 90-100 Celsius degree. Put the mouthpiece in the water for 10-20 seconds by holding the black handle, do not remove the handle in this step.
Step 3: Take out mouthpiece from the water, cool down for 6-15 seconds, put in your mouth and pressurize by biting on the tab in order to mold the shape.
Step 4: After the shape is molded, remove the holder and side pins. Repeat step 1-4 if the shape is not satisfactory.